text:
Contacts app disappeared
I've got a rooted Samsung Galaxy Nexus running Android 4.3 (Jelly Bean).
Since a week I can't find the contacts app. Seems like it disappeared.
It is NOT disabled (I've already checked).
I also tried to re-install it, using the .apk placed in /system/app, but the installer fails ("Application not installed").
Does anybody know how to fix, or should I better factory-reset my phone? I know this is a solution, but I'd prefer to fix it...
Thanks in advance
Giacomo

The install fail is likely due to your system being read only. If you use es explorer, select tools and root explorer, and remount system to rw and try to install again. Also make sure your launcher (if it allows hiding icons) isn't hiding your contacts app

I installed es and activated root exploring. Then I remounted /system partition with rw permissions. Still same error...mount|grep "system" returns this /dev/block/platform/omap/omap_hsmmc.0/by-name/system  /system ext4 rw,seclabel,relatime,user_xattr,barrier=1,data=ordered 0 0

I forgot: I am using the default android launcher, so no way out to hide icons...anyway, I also can't see the contacts app from settings→app

Try adb shell su -c "mount -o remount rw, /system" then adb shell su -c "/sdcard/contacts.apk /system/app/"

You wrote /sdcard/contacts.apk. I have no external contacs.apk package. The only one I have is the one placed in /system/app. Should I download a new one?

Ah, okay. What you want to do is look for your roms contacts.apk online and copy it to your sdcard, then move it to system/app and reboot. It should reinstall the app

I downloaded a stock maguro image from source.android.com, then I copied the .apk and the .odex into /system/app and rebooted the phone. Still can't find contacts.apk, and when I try to execute the .apk, the installer fails to start ("Analysis error - failed to analyse the packet", or something like this - I use italian localization).

I did a factory reset (using ClockWorkmod...for some reason stock recovery isn't working :/). Now everything is OK. Really can't understand what happened. I really thank you for the help you gave me, hope this thread will help other users luckier than me! (unfortunately I can't vote you up - need more rep...)


text:
where can I find man page for top
I have a bugreport file containing output from (as it says)
top -n 1 -d 1 -m 30 -t

The -m option is not known on my ubuntu linux, wo where can I find the android man page for the top command? I don't have root access to my android device.

By browsing the source code (for example here) you can see the usage help:
static void usage(char *cmd) {
    fprintf(stderr, "Usage: %s [ -m max_procs ] [ -n iterations ] [ -d delay ] [ -s sort_column ] [ -t ] [ -h ]\n"
                    "    -m num  Maximum number of processes to display.\n"
                    "    -n num  Updates to show before exiting.\n"
                    "    -d num  Seconds to wait between updates.\n"
                    "    -s col  Column to sort by (cpu,vss,rss,thr).\n"
                    "    -t      Show threads instead of processes.\n"
                    "    -h      Display this help screen.\n",
        cmd);
}

As you can see, the -m option specifies the maximum number of processes to display.

source: Stack Exchange

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/3.0/

sort: votes


text:
The phone won't receive some text messages (Specially the verification codes from Google, Dropbox, Evernote, etc)
Recently, my phone stopped receiving verification text messages from Google, Dropbox and Evernote. I contacted the carrier and they say on their end things are working (My other phone (same carrier) receives these messages). I can receive other messages from my friends. I even reset my phone. Still not working? Is it something to do with Android? My phone is Glaxy Note 3 with Kitkat 4.4.3.

After the reset (I assume you're talking about a factory-reset here?), did you re-install any of your apps, or did you first check in "plain state"? One of your apps might be intercepting (and "eating") those messages.

Do you have avg anti-virus installed on your device? If yes he might be the guy not letting through these short number messages

all_licenses: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/3.0/


text:
Root Verizon Samsung Galaxy Note 3 4.4.2 without tripping Knox
I have been searching and searching for a way to root my Verizon Samsung galaxy note 3 with 4.4.2 on it and with out tripping kknox, and am very unlucky. I have heard of Root_de_LA_Vega and it tripping Knox with 4.4.2. Then there is TowelRoot, this I feel might work, so if anyone has the same phone with the same update and has tried it. Tell me how it worked out. The last option I have found being cyangen mod installer. Once again if anyone has tried it on the same phone, tell me how it worked out.
Any feed back is great and thank you in advance.


text:
How do I stop floating the number keypad on Galaxy Note 8.0?
My Galaxy Note 8 displays a floating numeric keyboard when the inputType is number. How do I make it stop floating? It doesn't happen for other inputTypes, just this one. There's no option to change it to "normal" like there is with the regular keyboard. The only buttons are 0-9, delete, next, and a gear button.
I'm using Android version 4.4.2.

Why is it a problem for you? If it accepts numeric values, then the numbers are sufficient, isn't it?

It blocks buttons in my application when it's not docked.


text:
How can I create a key par for sgit?
I'm trying to use sgit to connect to a remote repository. It has a screen to "Manage Private Keys," but it doesn't seem to include a key generator. Instead, it lets you browse the file system, so presumably it's letting you pick a key generated by an external tool. I used JuiceSSH to generate a key pair, but can't find where it drops the key pair files.
So, how can I get sgit working? Should I be using a different tool to generate key pairs for sgit? Or is there a way to do it in sgit and I'm just missing it?

To export keys from JuiceSSH (either private or public):

Load up JuiceSSH and go to Connections
Swipe right to the identities list
Long press the identity you want to export the key for
Select either "Export public key" or "Export private key"

This will bring up a "Share" dialog that will let you save the key to clipboard/gmail/dropbox etc.
Thanks
Paul (JuiceSSH developer)

That I already did, so that I could add the public key to the remote repo. However, sgit needs the private key from the local file system, and that's the part I'm having trouble with.

@Don Branson, did you ever find them? I have the same problem now

@russwheeler, no, never did.

Yeah I just made mine on my laptop and copied them onto my phone

Will you be adding other encryption schemes like ECDSA or ECDH at some point?

How can one generate a password-less key using JuiceSSH?

When exporting the private key from JuiceSSH, you must share it to an application that you can write in like messenger or a note pad and it will input the key in text form.
Copy the entire text from "-----BEGIN RSA..." to "END RSA KEY-----". Save this as a file called "id_rsa" and use it as the private key for your client application(I used AndFTP). My notepad application saved the file as "id_rsa.txt" so I created a copy and removed the extension with this command:
cp id_rsa.txt id_rsa

Don't forget to add the public key to the server's authorized_keys file. This can be done by exporting the public key and copying it like before. I used the echo command to add the copied key the the authorized_keys file.
echo "ssh-rsa ... JuiceSSH" >> .ssh/authorized_keys

Paste the exported text in quotes so it looks similar to the above("JuiceSSH" is the name given to the key by the generator) and execute the command in the server's home directory(/home/user/) where the .ssh folder is located.

all_licenses: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/


text:
Retrieve a List of Application Versions
I want to retrieve a list of installed applications on KitKat and I also need their version numbers. I know I can use adb shell pm . . . to obtain a list of all packages, but I need the version for each application. I want to use ADB instead of manually clicking on each app inside of app manager. Is there a command that will give me that information?
Thanks.

In ADB shell issue the following command:
dumpsys package packages

This gives you all the information about installed packages, including the version number. You can then play around with grep utility to narrow down the results to only the lines you need:
dumpsys package packages | grep -E 'Package \[|versionName'

The above returns something similar to this:
Package [com.android.voicedialer] (41cb1a08):
versionName=4.4.2-323cb6b305
Package [com.android.defcontainer] (41cb4750):
versionName=4.4.2-323cb6b305
Package [ru.ok.android] (41cb7200):
versionName=3.7.5
Package [org.koxx.pure_calendar] (41cb9818):
versionName=3.3.3
Package [com.android.phone] (41df4fe8):
versionName=4.4.2-323cb6b305
Package [com.gsamlabs.xposed.mods.enablebatterystatspermission] (41cbc008):
versionName=1.2
...

I use this app from Google Play:
https://play.google.com/store/apps/details?id=cz.ox.AppList&hl=en
Description:
Write down all installed applications into the text or html file and save it on memory card into the InstalledApps directory.
In default, it creats log after each installed/uninstalled application.
Check Setup button in application for more settings.
Basic PHP script for auto upload you can find at http://www.2ox.cz/applist/
I am not author of this app.


text:
L2TP VPN fails to connect - how to troubleshoot?
I'm using the built-in VPN client (under Settings, More networks, VPN) on a Galaxy S4 (GT-I9500) running Omega v17 (Android 4.3).
I set up an L2TP (PSK) VPN connection and try to connect. It says "connecting..." for a while and then just says "disconnected" without any error message whatsoever. How do I tell what's wrong? Is there any kind of log somewhere?
I can see in the server logs that it does try to connect, but nothing in there gives me any clue as to why it disconnects. A PPTP VPN connection to the same machine works fine.


text:
Why does my data plan need to be on to send pictures with text?
I don't understand why data is needed to send a picture with a text or to send a text to multiple recipients. These things did not need data on a dumb phone. They just used texting.

Dumb-phones also use mobile data to send multimedia messages. It is just that with most dumb phones, the carrier includes this data access as part of the messaging package you are subscribed to. Most carriers require a data plan on a smart device because it has the potential to use significantly more data.

Assuming you're speaking about the Short Message Service: For sending pictures without text, that's done via a special "signal channel", where exactly 160 bytes fit into a single package (hence the limit of 160 chars). But when you want to include more (more text, multi-media elements like pictures or video, or some other attachments), those "additional data" don't fit into this "package" – so your message is switched to MMS.
Other than SMS, MMS are sent and received via mobile data (often via a special Access Point configured in your device). So this is the reason why it requires your data plan to send "pictures with text": you basically switch to a different service. Details can be found behind the links, if needed.


text:
Phone takes up to 20 secs between click on phone number and actual call, receive multiple times the same sms
My phone is behaving oddly and I don't understand what is going on.
It started a few days ago. When I click on a phone number or a contact (that link to his phone number to call directly), the list of last called number is correctly updated, the click is effective, but the actual call begins about 20 seconds later ! If I click multiple time on the phone number, it will call this number multiple times, but after the laps of 20 seconds.
Moreover, I found another bug that started the same day. When someone sends me an sms, I receive it multiple times, like 10/15 times, throughout the day (not at once). It's like I receive a new sms every hours, but it's still the same.
I didn't installed any new app or didn't make any update of the OS just before.
I tried to reboot the phone but the problem is still here.
I'm wondering if it's a hardware issue that makes android buggy, or an update of an existing app that makes it behaving that way.
Here the list of installed apps :

9Gag
Barcode Scanner
GMail
Google+
Prey Anti Theft
Andmade share
Dropbox
Endomondo (pro)
Facebook
Google Authenticator
Google Drive
Google Play Kiosque
Google Play Musique
Hangouts
Headspace
Jewels Star
Maps
Google Chrome
Profile Flow
Google Search
Vocal search
Skype
Street view
Super Sudoku
Twitter
Youtube

It's an HTC One, and I didn't rooted it or installed a specific ROM, it's the OS from the purchase.
Thank you for your help !!


text:
Can I set incoming calls to silent/vibrate, but still get an audible notification for texts?
Can I set incoming calls to silent/vibrate, but still get an audible notification for texts?
I'd like to be able to set my phone to silent for incoming calls, but still be able to hear incoming texts and other alerts. Is this possible?
Currently (still :( )running Android 4.0

Settings-> Sounds -> Phone ringtone -> None
Settings->Sounds-> Default Notification  Sound -> Any ringtone
Check vibrate on ring
or you can go to the messaging app and set the ringtone from the menu

Yes, you can, by either going to your sound settings setting each tone individually (i.e., ringtone, notification tone, and media tone) or on your home screen just press your volume rocker and from there also you can set the volume differently for all the three.


text:
Does Google Backup "phone home" even when disabled?
I was just giving viaProtect a try, and stumbled upon this:

viaProtect Screenshot showing "phone-home" activities (click image to enlarge)
As you can see in the highlighted area, SystemBackupService is contacting something in the US. Sure, that could be Google Cloud backup backing up my apps, settings, whatsnot. But the thing is: I've turned that off from the beginning (on account initialization, I've answered the question for "Do you want to backup..." with a clear "No"). So I'd not even expect the service running at all, not to speak of transferring data to any place.
Am I missing something here? I first thought the same service might be used to sync contacts/calendars as well. But then I saw the other entry "3 lines up": "Google-Kontakte synchronisieren" (Google contacts sync), so that's a separate service.
I don't like being spied upon without my consent. And I don't want my data going to the cloud without being able to control what exactly goes there (most stuff I don't want there at all). So what's wrong here? And how do I stop that (except by flashing a custom ROM with no GApps, or removing/freezing them all, I mean ;)?


text:
First smart phone, activating droid incredible question
I just bought a used Droid Incredible off Amazon and would like to play around with it. Its asking me to call a number and activate it. I am hesitant to activate it before I go to the Verizon store to upgrade from my flip phone to this smart phone, using the same phone number. If I activate it will that mess anything up? I know very little about cell phone service.

Wait till till go to the Verizon store. They can set up your number on your new phone while they desk with your phone transfer.

authors: Артур Сафаров


text:
App that uses default camera to save in a non-default location
I am looking for an application that does the above. Preferably, I could create application shortcuts for different save locations.
Also, a Dropbox option would be nice but not required since I could use DropSync.

I use FolderMount (needs root) as a workaround to this issue. I create a link of the folder where the camera images are stored to a different folder in the external SD card.

Today some apps store big files over the internal SD card (e.g. games,
  podcasts, offline RSS content, pictures, videos, offline navigation
  software). Typically users have a small internal sd card size (~16GB)
  while the external SD is a lot bigger (~32-64GB). Most of these apps
  users download from the Play Store save their application data in the
  internal sdcard by default and don't have an option to use the
  external SD card to store data so they starve your internal SD card
  memory. FolderMount is the solution to this issue. This app has the
  ability to link folders in your internal sdcard to folders in your
  external sdcard thereby populating the internal sdcard folders with
  content that really exists in the external card. This helps us free
  space and have multiple games/apps with big data stored simultaneously
  without the need to uninstall. For Nexus devices with no external
  sdcard, this application should help link folders to a usb flash drive
  for example.

Yep works great - I'm running Cyanogenmod 11


text:
Move /#/data/app to external SD
Folks I've rooted my device and installed Directory Bind. I'm not sure if I can move the /#/data/app folder to an external SD. There I have all my .apk files. But I seem unable to find this folder when I look for it in Directory Bind. I'm confused about it. I could sucessfully move the data files but not the .apks what am I missing?

try using a different file explorer other then the default one.

When you use directory bind does it ask for root?

It does ask for root. Hence it would not be able to access the sudo binary right?

What do you mean by the # in your path?
What you should do is this, Get Android SDK (http://developer.android.com/sdk/index.html) if you haven't got it already, then enable debugging mode on your phone and connect your phone to your pc with usb cable.
In the file explorer lookup the symlink to your external sdcard. its probably /extSdCard or /external_sd
Now open up an terminal window and enter:
adb root
adb remount
adb shell busybox mv -f /data/app /extSdCard/

it would move the app folder to your external sdcards root dir.
Or download terminal emulator app and enter:
su
busybox mv -f /data/app /extSdCard/

This should work, if not let me know

Hi, the # stands for the "/" folder. File system base.

so that's a useless addition, since / is already the root, no /#/ is needed. Anyways, try it pls

I also should add it that even if you move that folder, you can not use the apps within /data/app from external sdcard.


text:
What application turn on wifi/GPS?
What application turn on wifi/GPS at specific moment (adb logcat  or what tools to use, what strings look for)?
What installed application able to turn on wifi/GPS? Or more generally how I can get list of all installed application permissions by adb, adb shell or another tools from Android phone/SDK?

Any app with the permission ACCESS_FINE_LOCATION can trigger GPS – unless you've explicitly switched off GPS location with your device settings. To scan for possible candidates, you can use a Permission checker. There's e.g. Permission explorer which allows you to browse installed apps by permissions, so you can limit your watch to relevant candidates.

Permission Explorer: categories, apps by permission; LBE (source: Google Play; click images for larger variants)
If your device is rooted, there are also other means. I'm e.g. using LBE to protect my privacy. Concerning location, I can restrict on a per-app base whether an app can always access it, never access it, or I want to be asked when it tries. The latter method should definitely bring up your culprit – and even in case you missed the event, there are always LBE's logs (accessible from inside the app) you can check.


text:
Bluestacks ask Google Play Service eventhough it was installed
I'm trying to play Clash of Clans on my Windows 8 PC with Bluestacks app player. Installation was successful and after launching the game and click on Sign-in to Google+, it said Google Play Service is required. I checked the settings->app and it was already installed. I tried to remove and reinstall but still doesn't work. I can't also sign-in to Google account in setting->accounts. Please give me some advice. Thanks.


text:
LG G2 GPS works only when screen is off!
I have the weirdest problem in my LG G2 - the GPS works only when I'm turning my screen OFF!

Running Kitkat
Problem reproduces with both Waze and Google Maps Navigation
Tried a factory reset, didn't help the problem


text:
Physical-keyboard driven app launcher?
On most operating systems, there's a keyboard shortcut to trigger a keyboard-driven app-launcher.
For example:

On Windows: Super and start typing.
On OSX: Super+Space and start typing.
Linux: it varies, but same as OSX on Elementary OS.

Is there an equivalent launcher available for Android where I can push a key combo and start typing to find the app I'd like to launch?

On the stock Google launcher, if you simply start typing, it'll search for the thing you typed for, both online and in local apps. You can cycle through the matches with the arrow keys, and launch one with Enter.

That's awesome, but is there something that will do this no matter what app I'm in? That's kind of what I'm looking for. Alt+Tab is pretty cool, but only useful for the last 6 apps.

Pressing the home key goes to the launcher from any app.

I found that "alt-d" from the home screen when to the application launcher (though I needed to press some keys to get to the search box).
This was documented in the key-list that you could pop up with windows-/.


text:
flashing jelly bean(4.2.2) on nexus 5(hammerhead)
I am trying to flash jelly bean on Nexus 5 but didn't find any factory images , is it possible to flash the jelly bean(4.2.2) image generated by downloading & compiling the 4.2.2 AOSP source code
i tried running lunch command but didn't found the "aosp_hammerhead_userdebug" is there any other way to flash 4.2.2 on nexus 5

Its because Nexus 5 not came with Jellybean. It was Kitkat. That is why you can't find Jellybean factory images for Nexus 5. You may try to flash custom Jellybean ROMs(4.2.2) for Nexus 5 if available.

I am afraid you cant because Nexus 5 shipped with kitkat and backward compatibility is not supported.


text:
Problems with wifi connection
I have a netgear router wnr2200 and sometimes, when I connect with my tablet android or my cellphone, there are some problems. Using chrome, sometimes the page can load and load, I have to reload it. Using YouTube or play store, sometime it keeps on loading I have to restart (also seen with Astro file manager and freely). so I assume it is because some requests aren't succeeded.here are my home channels (my WiFi network is colored)
i
I already tried channel8 and 1, no success. Any idea (channel 14 is not supported)

Is switching to the 5 GHz band an option? I just checked here, and have the entire band to me alone – while everybody else and his little sister is occupying all channels on 2.4 GHz :) Unfortunately, not all devices support it.

I've got the 5Ghz network for my self as well. And that's just great to have it like that

From http://www.netgear.com/home/products/networking/wifi-routers/wnr2200.aspx#tab-techspecs, it isn't possible :(


text:
possibility of adding gtalk contacts to my whatsapp
Could I bring my gtalk contacts to link to my Whatsapp? (in other words Sync the two?)
I don't want to run two seperate apps and wondering if there was a possibility to add these together? I will only be using Whatsapp now so really really need to hopefully be able to bring those in gtalk to link to it... any advice please??

Nope. It's not possible. A key reason for this is (at least) that

GTalk identifies people with email address while
WhatsApp identifies people by their mobile number.

On top of this both of the systems are proprietary and I don't think neither Google nor WhatsApp would want their users to be pushed over to the other system.
The above said, if you have the mobile number(s) of your GTalk contacts then those will, of course, be added to WhatsApp automatically if they also use WhatsApp. But that's really just stating the obvious.


text:
Custom ringtone for particular contact in 4.4.3
I am using nexus 5 with 4.4.3. I tried to keep the custom ringtone for contacts. I am able to keep custom ringtone for a particular contact with no problem.
But when I choose none  (ringtone with no sound )from the list of ringtone available, when the particular contact calls the default ringtone is ringing rather than the none ringtone. How to keep none ringtone.

I couldn't find a way to fix this bug, so I used an MP3 of complete silence as the custom ringtone. You can follow the instructions for doing this here:http://android.stackexchange.com/a/127835/149206

Despite this working for a test contact I created, the contact I created for a spam number still had an audible ringtone the next time they called. I have now set that contact to go straight to voicemail. Hopefully, that will work.


text:
change amber/weather alert turns
does anyone know how to change the alert tone for weather/amber alerts? I'd like to get them, but I can't stand the ear splitting EAS tone, especially in the middle of the night.
Cyanogenmod 10.2 if it helps, I don't mind overwriting system audio files if possible.

Are these the alerts that are shown via Google Now?

No, the default SMS app.


text:
Can I add my own themes to the new Theme section in the Personalize settings?
The latest update to KitKat 4.4.2 on my HTC ONE added a new Theme section to my Personalize settings. Right now, it just lists out four pre-defined themes, which appear to just be a wallpaper and a set of colors which control the global theme of the phone and apps.

Currently, the most bearable for me is the all black one, but the button colors with it are green which is kind of annoying me. I'd love to be able to modify them to be blue, but I don't see any way to modify the themes or even add my own. There's no additional menu when viewing that screen, no popup for long-pressing a theme, nothing. You can only select one and click Apply.
Is there a simple way to add my own themes to this list, or is there even a way to add themes to this list?

As far as I recall you have to install the themes as an .apk file, and you can't uninstall them afterwards. Head to XDA for your device model and into the 'themes and apps' section and see if anything is there. http://forum.xda-developers.com/htc-one/themes-apps


text:
Firmware upgrade gone wrong
I have a Samsung Galaxy S2 (SPH-D710) and was trying to do a firmware upgrade through Kies and the upgrade encountered an error (I think the usb cable came loose and lost connection). After that, when I tried booting the phone a screen appears with a yellow triangle with an exclamation point in the middle, a phone to the left of it and computer to the right with the message "Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again".  I tried doing the emergency firmware recovery in Kies but that seemed to freeze at 64%. I wasn't sure how long it was supposed to take so I let it sit there. Eventually the battery level went low enough that the recovery failed and now the battery is too low to boot into download/recovery mode. When I plug the phone in to try to charge the battery the "Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again" screen flashes and it doesn't seem like the battery is charging. Is my phone completely screwed? Is there anything I can do at home to fix this or will I have to take it somewhere?
Thanks

If you still have the original usb cable then use it because it probably is modified by Samsung.
Consider upgrading to latest Android (currently 4.4.2) it is well worth it you wont brick it, I did it with my first Smartphone 3 years ago (I still use it) just when I got it and I've done all I wanted to do like install root Rom kernel audio engine etc removed bloatware and lots more :)

I ended up borrowing a battery to finish the emergency firmware recovery in Kies. The second attempt proved successful in the firmware upgrade, however, still had network connection problems. I took it into a Sprint service center and they tried doing software updates to the phone. Tech had to do the software updates several times. Found that after each update attempt, phone would work, but connectivity issues would come back after inserting the SD card. He deemed the SD card to be corrupt. Phone is now working fine on the latest firmware with a new SD card installed. I am not sure what exactly is on the old SD card that would have corrupt it.
Thanks for the suggestions.

Yes,  turn off the phone and try to charge from a wall charger,  and when battery is full,  try to do firmware recovery,  this time use a good usb cable, and ensure a good Internet connection.
Keep battery level above 80% or keep it full.
And if all fails go to service center.
Vote up if I helped ;)

I've tried plugging in to a wall charger after turning the phone off, but it just flashes the firmware upgrade issue screen and doesn't seem to charge the phone. So I'm currently stuck in the position that the phone won't charge and I can't get into download/recovery mode.

If u have someone with same device,  try charging your battery some way and follow the recovery steps. :)


text:
Why doesn't Cyanogenmod show the update for CM11-M4 in the Cyanogen Updater?
On my phone when I do a CM update, no matter what I chose to show the update for M4 isn't available? What's going on?

CM11-M4 didn't ship for the jf or d2 phones (Galaxy S4 and S3). They were not ready. It'll be back for -M5. All of the jftle- builds were concentrated into one Unified Device build.

Note: Unified device
Soon after the release of CM 11 M3, all Qualcomm-based variants of this device were merged into a single build: jflte. The device information pages for the individual variants still exist so that you can reference any device-specific unlock instructions, download recoveries, or would like to build, for example, CM 10.2: jflteatt, jfltecan, jfltecri, jfltecsp, jfltespr, jfltetmo, jflteusc, jfltevzw, jfltexx.

This new build, simply jftle has no M4 available on the website either, it's not just the updater.
And, just for comprehensiveness the jftlespr (the Sprint Deprecated variant) also doesn't have the M4 build.
Here is what was said in irc.freenode.net/#cyanogenmod,
< [R]> jf and d2 weren't ready for m4
< [R]> so they didnt get it
< EvanCarroll> [R]: Thanks for the update!
< EvanCarroll> [R]: is there a post about that, and will they get -M4 later, will they get -M5 or will they be supported in CM11?
< [R]> of course they dont get it
< [R]> of course there will be m5
< [R]> i said it wans't ready for m4
< [R]> i dindt say cm is dropping it


text:
Data over mobile network switching on behind my back - what could be doing it and how to stop?
Alcatel OneTouch 983, Android 2.3.7
I normally have "Enable data access over mobile network" switched off so as not to drain my phone credit, only switching it on when I want to do something quick on the Internet and don't have wi-fi access where I am.
However, a few days ago, for no apparent reason at all, this setting began switching on at intervals without me doing anything.  Tried switching my phone off and on, tried killing most of my running services, has made no difference.  Generally, a few times a day I find that it has switched on.
Have installed AVG Antivirus Pro and it found nothing.
Any clue of what it could be that's doing it - and more importantly, how to get rid of whatever it is?  I hate to imagine how much of my phone credit it has drained!

What other apps do you have installed?

Agree with @1990clb it is important to mention at least the apps that you installed or changed around the time the problem started or other setting that you may have changed. Another general piece of advice is that when it comes to Android, Antivirus softwares are misleading as there is no concept of viruses in Android at the most there are badly coded apps and even apps designed to perform maliciously! Also please mention if your device is rooted

I don't remember installing anything new around the time the problem started.  Usually I update apps I installed when I'm told an update is available, but avoid updating system apps unnecessarily in order not to clog up the internal memory.

But the apps I have installed: 1Tap Cleaner, Adobe Reader, FastConnect (which I haven't managed to get to work), Mail.com, National Rail Enquiries, StopWatch & Timer, Wikipedia (which I might uninstall as it's no real improvement over the mobile version of the website), and various games (none of which have any reason to access the Internet except for when I choose to download new puzzles).

@reubenjohn And no, it isn't rooted.  What do the likes of AVG Antivirus for Android do, if not protect you against viruses?  Should it really be called AVG Antibadlycodedapp or AVG Antiappdesignedtoperformmaliciously?

@Stewart haha you don't seem convinced I am partially at blame since I hadn't provided any references so here is one by one of the most popular android antiviruses Lookout-reference specifically under the section Is there really such a thing as an Android virus? where they make it crystal clear. Another thing please reference the person when making comments so that they will be notified!

@Stewart Also none of the apps you mentioned seem suspicious especially since you said you hadn't installed anything around the time. I would suggest a system bug. Or a workaround would be to use an app that automatically controls the network state according to your customization (I suggest Juice defender whether you have such a problem or not)

authors: ΣΤΕΛΙΟΣ ΙΩΑΝΝΙΔΗΣ


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Does any app allow schedule voice record except Cinixsoft recorder?
I have installed cinixsoft. It can schedule time recording. However, it will randomly stop and then resume. For example, a 2 hour record may cut into 15 mins, 40 mins, 20 mins, 40 min etc. During every cut, it will lost around 3 mins of data. In other words, I will get around 105 mins out of 120 mins of recording. Does any other software do the same thing, but without that problem?

Voice Recorder can schedule recording at any given time for a predetermined time.

Why is this down voted? It fits the OP's requirements, right?

@Power-Inside It's a link-only answer.

@damryfbfnetsi Link only? He posted the link and did mention about the feature(s), albeit being short.

@damryfbfnetsi, I don't think any more addition is required to this answer. Any way screen shot added.

Try PCMRecorder. From the app description:

This is a simple voice recorder. It records by high quality(PCM/WAVE).
Records in 8000,11025, 16000, 22050, 44100 and 48000Hz - 16bits -
Mono.
Recordings are stored on the SD-card ('PCMRECORDER').
Record:

Records by background
16bits/Mono
Records no time limit

Playback:

Playback by backgroud
Rename
Send mail

Settings:

Sample rate(8000,11025, 16000, 22050, 44100 and 48000Hz)

Permission:

record audio
wake lock (to background recording)


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How to prevent WhatsApp images and other local pictures folders appearing from Google+ Photos app?
I've enabled auto backup for camera photos except local folders. Although local folders are not uploaded to the cloud, Photos app keeps showing these folders and making a mess. I'd like to have this app clean with only camera photos just like Dropbox's Carousel do.

You may be able to create a blank file named ".nomedia" (yes the period is needed; the quotes aren't) in the folders you don't want it to index using a file manager. Then reboot the phone. This should prevent them from showing, but not always. Also it could cause problems for the apps that rely on those photos, so this may not be the ideal solution.

Update 2021: How to do it in the new  Google Photos Android app:

Open Google Photos.
Click on your avatar in the upper right corner.
Click on Photo Settings.
Click on Backup & Sync.
Click on Back up device folders
A list of folders will appear with a toggle on the right.
Toggle on / off the folders you want to back up.

Update 2014: How to do it in the new  Google Photos Android app:

Open Google Photos.
Go to Settings on the left panel.
Click on Backup & Sync.
Scroll down a bit.
Click on Choose folders to back up...
Activate or deactivate each folder by clicking the switch.

Google+
From: Back up photos & videos automatically
Turn on or off for individual folders

Open the Photos app .
Touch the menu icon   at the top left and then On Device.
To the right of each folder title, touch the cloud icon to turn Auto Backup on or off for that folder:

 Auto Backup is on for that folder.
 Auto Backup is off for that folder.

new version of photos app doen't have this option. .nomedia works perfect.

@shailesh thanks for noticing, updated with new steps.

Goto accounts > Google > sync > un tick   pictures

It sounds like OP wants camera pictures to still be synced, this will break that.


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Changing Your MAC Address/Without Root Privileges
I want to change the mac address of my phone without making any android rooting.

Though unlikely to be done without root, you can find some MAC spoofers in this list.

There are MAC spoofers, but all the ones I have seen require root. There is also an issue where the drivers tell the program "Yep I've changed the mac address to " but the address isn't actually changed at all. This is an area of ongoing research. Check out Chainfire's google Plus, he is the creator of 'SuperSU' that we nearly all use on rooted devices, he has an app called 'PRYFI' just for this, but there are a lot of issues in this area. Apple are building it in at an OS level in iOS 8 apparently.

It should be noted that Pry-Fi is a MAC address randomizer, and manual spoofing is "a feature you need to enable separately". iOS 8 will include MAC randomizing, but not manual spoofing as far as I could tell from the little I've gleaned from what has been released.

@filoxo yeah I got all my terms muddles there! Too tired, I think the point is ok but the terminology is totally wrong!


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how could my viber messagelog dissapear?
i was chatting on viber and then left for a couple of hours and when i were going to write a message again i saw that all of my previous messages had been deleted except for two of the latest ones. I havent updated or anything, what happend? can it update by itself and deleting messages?

There is no situation in which Viber messages spontaneously delete themselves. Viber does not update without your permission - and updating does not delete messages.
If this occurred on Viber for Desktop, please ensure that the computer that you use is a private computer and no one but you can access it. Additionally, you might consider placing a screen lock on your phone so that your applications are better protected.

I think I just experienced such a situation. My mum got sick of her (Android) phone malfunctioning and bought a new one - it was then my job to resurrect as much data as I could from the old one. Would any of the following have caused Viber to delete its message history: 1. Mobile service (and number) being moved to a new phone with a new SIM, 2. Trying to run Viber with SIM removed, 3. Clearing phone's "Contacts Storage" data which was almost certainly corrupt (People (contacts app) and Viber wouldn't run until I did so), or 4. see next comment, the character limit's almost reached.

When I finally got Viber to run, it asked me what my number was. I picked our country from the list and entered my mum's number, which ended up in "international form" (+61 4xxx... instead of "local form" 04xxx...), and Viber sent an activation code to said number. Does this mean it considers it now has a new account on the phone that's different from the old one (I don't know whether the number was originally in local form) and therefore created a new message history and/or deleted the old one? Is there any way to retrieve the message history as it was before all this? Viber version: 2.3.5


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Google Play App Icon is gone, and cannot be installed
With a recent update to my Verizon Android Galaxy S4, the Google Play store icon has disappeared from my apps list.
I have done adb shell pm list packages and com.android.vending is there, but I get the following error when I try to start it with am start com.android.vending.
Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] pkg=com.android.vending }
Error: Activity not started, unable to resolve Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 pkg=com.android.vending }

When I tried to re-install it from an apk I downloaded, I just get an error indicating that it is already present.
When I try to remove it, I just getFailure.
Is there some way to restore Google Play short of re-imaging the entire phone?


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Nexus 5 not appearing in Windows 7 Device Manager
At one point I had my Nexus 5 showing up in Device Manager on Windows 7 but now it will not show up at all.
Background:

I have Android SDK Level 22 installed
I have run SDK Manager and downloaded the latest Google USB driver
I recently go the Android 4.4.3 update.  I am not clear if this was right before I started to have problems or right after so I am not sure if it is related or not
I have even installed the LG Universal driver
I have my phone in MTP storage mode, but have tried camera mode as well
I have tried turning on Developer Mode/USB debugging as well
I have tried 3 different cables
Windows never seems to even recognize that the device has been connected via USB - I get nothing, not even 'Unrecognized device' or 'Driver not installed'.  No entry in Device Manager either

I've followed the many suggestions on SE and the web

make sure MTP storage is enabled (check)
try camera mode (check)
try Developer Mode/USB Debugging (check)
change cables (check)
Update the driver for the phone in Device Manager (The device does not show up in DM)
Remove old stale "hidden" android devices in Device Manager (check)

I'm out of ammo.  Anyone have any ideas?

Does the phone think it's connected? There's a notification if it is.

Good point.  It does not have the USB notification icon.  Connectivity had been flaky a few days before this happened.  wonder if the data channel on the USB is bad (it still charges when connected)

@DanHulme Bingo.  I wiggled the cable then pushed it all the way to the left of my micro-USB port on the phone and it connected and was detected by Windows.  Looks like I may be getting it replaced under warranty - this is the second android phone where the micro-USB port has gotten flaky (I had the original G2 that did this to me as well).

Thanks to @DanHulme in the comments.  He asked me if the phone registered a connection in the notification bar and it did not.  I wiggled the cable then pushed it all the way to the left and the phone was detected by Windows.  Must be a dirty or failing micro-USB port.  If cleaning it does not work I will be returning the phone under warranty.

There are apparently lot of cables out there that will charge the phones nicely but when it comes to data transfer will not meet the protocol needs and USB will not detect anything connected on the USB device driver to kick in at all.
I decided to try a new cable and lo and behold, two different phones immediately got recognized on Windows 7 (an LG and a Nexus) that were not working with other cables. So even though it sounds dumb, these darn cables are a major culprit (or the connector jack/pins rather).

I tried everything and then some. Different cables, different computers, but the Nexus 5 would not show up on the device list, the phone would not know it was connected, only charging worked.
I examined the USB port for any visible obstruction or damage with a magnifying glass, but it appeared clean and in working condition.
Then I saw an almost empty can of Dust-Off spray sitting on my desk. I stuck the nozzle extender into the phone's USB port, sent a couple of blasts into the opening, et voila, it connected again.
Bottom line, there might be a mechanical obstruction causing this that it is not visible to the eye.


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Android Jelly Bean - Download and install Download Manager without a pc
I'm writing this from the tablet having the issue.
2 months ago when I still had a working pc I wanted to install Linux on my tablet and in the process I wiped mostly everything from it and changed the custom recovery to not include those wiped app files.
I wanted to put Android back, but I forgot to download and install the missing app files for it to work correctly, the most important being the Download Manager.
Today my pc unfortunately broke up and I have a project to be done. So I thought to begin using this tablet to program as I have no money to buy another pc for maybe a year.
The problem is that I can't download anything as I'm missing the Download Manager app. When I try to download something for ex. with Chrome it crashes.
Now, given that I have no access to a pc for a year or so but my tablet is fully rooted, is there a way to download and install the Download Manager apk?
My thoughts on possible theoretical ways:

As I can't download but copy/paste text from the net, I could try to look for the Download Manager apk, copy its source, paste it on text file and give it the .apk extension.
Trick the Chrome cache to store the .apk file and then retrieve it from the cache offline. But here I don't know where the Chrome cache is stored and I'm afraid it's in a privileged part of the system where only a file manager with root functionality can see it.
2.
If it's supported create a script on Jsfiddle to fetch the apk file and save it through IndexedDB or LocalStorage and access it offline thereby being able to install it.

My question here is: Would that work? Otherwise have you ideas on how to do that given the current situation?

Does the Play Store work with the tablet in this state?

#1 definitely will not work, as .apk files are "compiled programs" (to put it in easy words; it's "binary code" you cannot simply copy/paste). #2 implies Chrome is loading the file in the first place, which it obviously does not. I can't say anything to #3. Dan's approach is the most promising; if you can access the command line, you could also try wget <url> to download the .apk.

Thank you guys for the clarifications. I managed to download ADM (Advanced Download Manager) from the SlideME market that I luckily didn't wipe from the tablet. From there on I downloaded all missing apps files and got it working normally :) I can finally start hacking away!


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adb and fastboot drivers for Xperia ARC S
I am trying to flash boot.img via Flashtool 0.9.16.1 but when i connect my xperia arc S in "Fastboot" mode then i get error message like
"Device drivers are not installed, you can find it in drivers folder"
I installed Flashtool-drivers.exe but no success.
Still error is same.
Please help me to solve this

Do you mean this one? You should add links to what you've installed so you won't get duplicate answers...

The latest package is this, but the first link worked for my Xperia Z,


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What factors constrain the highest possible Android version for an Android device?
I've read on the Sony's website that the increasing amount of RAM required for newer versions of Android is the limiting factor for upgrading the operating system of Android devices:

... if a
  lower amount of free RAM is available to applications after a new
  release of the operating system (due to increased capabilities in the
  system), phone speed will eventually be impacted (this is the main
  reason that a certain device cannot be indefinitely upgraded to newer
  releases of Android™).

But in the newest release of Android (KitKat) it is asserted that the new version needs lower amounts of RAM.
So, my question is what are the limiting factors that eventually constrain your device's OS from upgrading to newer versions of Android? I mean, what (hardware) factors should I consider when buying an Android device to increase the chances of getting the newest OS updates for a longer time?

You say hardware but you may also wish to consider whether the phone has either manufacturer and/or network provider modifications, this can cause delays or ultimately block updates if you are waiting for a manufacturer and/or network provider to provide an update. Compare this with the Nexus series of phones.

While that RAM restriction applies to several low-end devices (which came with less than 512 MB RAM), it is not really the main reason for missing updates. And looking into the custom-rom scene proves that many devices abandoned by their manufacturers (not too seldom for this reason) are in fact supporting newer versions. So when talking about "official updates", main reasons are:

manufacturers prefer you buy a new device. They do not get "fresh money" for updates.
sometimes the customizations done by the manufacturer are too ressource hungry (a live example is Samsung's Touchwiz preventing some of their devices from getting updated)
after a while (at least after 2 years, for some manufacturers much earlier; Google specified 18 month as minimum) devices simply get "out of service time", and thus all further development is stopped. While this might sound harsh, it's at least partly understandable: most devices require hardware-specific drivers which the manufacturer had to update to new versions, and that cannot be done indefinitely if an enterprise needs to work profitable – or prices would go up to something you're unlikely to be willing to pay :)

Nevertheless, as I already pointed out: if a device is used widely enough, the community often provides future updates in form of custom-roms. To install those, the device in question needs to be rooted, the bootloader unlocked, and often a custom recovery is required. So here's something the manufacturers should at least provide help: if they decide to no longer support a device, they should provide an official way to root and unlock it (could be done via a "last update" from their side), so users at least have a chance to take care for themselves. Guess they are simply afraid that would keep users from buying new devices ;)


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Lost, deactivated phone being used by someone on wifi. Can I track it?
The person who found my deactivated phone sent me a threatening E-mail from my own mailbox. He suggests he is has been reading my recent mail and says he found the phone in front of my house, suggesting he knows where I live. I have changed all my passwords so he won't get new mail but can access anything already downloaded.
Can I track this guy through the phone if he's using wifi or by IP address? He likely lives near me.

In what sense is the phone "deactivated"? Do you just mean that you told your carrier it's stolen so they've disconnected its SIM card?

Also, you'll find a lot of information in the tag wiki for the [tag:lost-phone] tag you've used, and the existing questions with that tag.

Yes you can if a) the phone is on
               b) wifi is on
               c) location is turned on (through settings)
As an experiment (using Android Device Manager through Google Dashboard) I tracked my phone with SIM card (cell towers) and with the card removed (WiFi). The wifi results were much more accurate.

If he can still access your email, you could send some url or image in a mail and check the ip or location from where its being accessed.

The questioner states that passwords have been changed so that new emails can't be accessed from the phone.

I got a new phone and was only usin my old phone as a music player. It is not an active phone but still works through wifi. I'm pretty sure GPS is off because it was a battery drain. That leaves IP address or wifi signal as a way to locate it. I wouldn't care about it if the person who has it wasn't being creepy and threatening.


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Convert Internal Storage to Phone Storage
I have a Wiko Darkmoon running 4.2.2 (Wiko hasn't upgraded to 4.4 yet). The phone is advertised as having 4gb storage, which breaks down as

Cache: ~123MB, /cache
Internal: ~1008MB, /data
Protect:~9MB, /protect_s
Sdcard2: ~1749MB, /mnt/sdcard2
System:: ~690MB. /system

Total: ~3579MB ~ 3.5GB.
(info retrieved using FreeSpace https://play.google.com/store/apps/details?id=ru.krikun.freespace).
On top of this I have mounted a 32GB SD card (/storage/sdcard0). My options are to by default use the external sd card. Unfortunately the /data is full and it basically prevents me to install more programs.
Also, the Sdcard2 thingy is supposed to be internal and it's completely free.
My question is, can I convert Sdcard2 to mount with /data? Having +1GB in /data would alleviate my storage constraints a lot.
I googled and searched here and it seems this is not a common issue. Most of the things I've read are about mounting everything in the external SD card, which is not the same I want to do: I want to reuse the internal 1.7GB by joining it to Internal (/data) partition.
Cheers!

I'm not saying this for sure ! But as far as i had checked the partitioning topics and also in my own experience i'd dived into actions about that .
i do not recommend you delete a partition completely , Because first of all it may cause an error so you can safely reduce it's size to very low & keeping that tiny space for the system presentations and checks (android checks much much things that we can't even guess those are counted as an important thing for the system to run) .
I'm not a pro at all Just hoped to be usefull :)

This is not a good idea. Android M and on have a system to treat an SD card as part of the internal storage, which is far preferred to this, which may softbrick or even hardbrick the device.


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HTC One M7 use Sense 5.5 app in Sense 6?
I updated to Sense 6, but to be honest I'm regretting it. The colors changed, the icon dock now feels too blended together, but whatever, I can deal with this.
What I can't deal with, is the native camera app. I want to use the camera app that came with 5.5 (with dual buttons for photo/video, instead of having to click a menu to choose whichever you want).
I tried extracting the Camera.apk from the ROM, but it fails to install.
I'm not on a rooted device.
Is there ANY way to have the camera app that was in sense 5.5 on sense 6?..
Thanks..


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Starting emulator for AVD 'Android_2.2' PANIC: Could not open: Android_2.2
How do I please to make the AVD correctly works ?
When I try to start a virtual device, I get the following message :

How do I to fix that, please?

Are you starting Android Virtual machine from within eclipse or directly ?
If you are running it from eclipse then before starting eclipse just make sure to run the below command:
sudo export UBUNTU_MENUPROXY=0

Now start the eclipse and try running AVD from it.
I hope this helps. It solved this issue at my end when I faced the similar problem.

I'm starting it from Android studio.

That haven't worked. I'm still getting the posted error message.

Oh I see. Many times this error arises because of root issues. In my case, I installed eclipse as root but AVD was being configured for normal user.
Well there may be several reasons for your problem.
I hope this google search can help http://bit.ly/1mG8Ris


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Even after a factory reset the nexus 7 won´t work!
I´ve tried the latest Android update into my Nexus 7 (1º gen) tablet.
Something went wrong in the middle of the process (it was something to do with the software, because the battery was full and the wifi wa working).
I had to restart the tablet, and after that I just couldn´t get to any app.
Every single app or thing that I tried to use just would "unexpectedly" shut down. And after trying to shut down and on again the tablet, it was locked into the welcome screen (after the "Google" logo). The tablet wasn´t rooted in any way.
After a lot of reading and after searching on the net, I´ve found that the only way to use the tablet again was to do a factory reset.
I´ve done it. (One weird thing: it doesn´t appear the original "X" signal when initializing the thing, but the newest "bubble like" screen).
But even in that case, I still get freezed into the welcoming screen. And even if sometimes I get to enter the tablet, I can´t use the keyboard (trying to type any number will freeze the screen) and I cannot enter the settings screen.
Even if (after the factory reset) I can access the tablet, I can´t access the settings screen (so I can´t change any default, nor I can enter the "developers" tab in order to access the tablet in debug mode with my PC).
Is there anything I can do?
I´ve even tried completely discharging, without any luck (it does the same after charging it again).
Since then, I´ve tried the "factory reset" several times, and the problem remains.

Thanks for your reply, but doesn´t that solution need a connection with a PC? The nexus is not recognized by the pc, and  I can´t access the settings screen (so I can´t change any default, nor I can enter the "developers" tab in order to access the tablet in debug mode with my PC).

Have you recently rooted or changed system files on the device?

After much struggling and right before I was just going to give up, I´ve found the solution. So Naturally, I thought best to share it here, just in case anyone else was having the same issue.
The issue was:
1- I have a Nexus 7 (1º gen) that after a failed Android upgrade was infinite looping though the welcome window (right after the google logo appears).
2- So I´ve first tried the easy solution: A factory reset using the bootloader screen (and I´ve accessed that screen pressing power and volume down while turning on the device).
3- It didn´t worked, because the problem explained in 1 was still happening.
4- The tablet wasn´t being recognized by windows (nor linux for that matter), so I couldn´t even get to its settings in order to set it in debugger mode.
So, to solve the issue this is what I´ve done:
a- I´ve installed the Universal Naked Driver in order to my PC to be able to recognize the nexus device. It did recognized it before, after the looping problem. But after the failed resetting of the device, it seems that it didn´t recognized it anymore.
b- I´ve installed the Nexus Root Toolkit in order to unlock the bootloader and then reinstall the drivers. I´ve tried some other toolkits, but this was the only one that it actually worked out of the box.
c- So, using the toolkit I:

Pugged in the tablet into my PC
Clicked the "unlock" button (yes, the process erases all personal data).
Selected "soft bricked/bootloop" and then clicked "Flash Stock + Unroot"
And then just followed the instructions.

There´s a quick way of doing the same (but in my case it didn´t worked out), that maybe someone with Ubuntu can use, and it´s here.
Hope this helps some desperate folk out there.

This helped me recover a Nexus 7 which, like yours, was looping on boot even after factory re-sets. I didn't need Universal Naked Driver though, just Nexus Root Toolkit.


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Install apps on Android Phone automatically when installed in BlueStacks
I am developing an Android application, and I have to constantly mail the apk to myself to download to phone. I also use Bluestacks app player for testing. But also verify app in my own phone. Is there any way to have the app installed on the phone directly when installed on the Bluestacks App Player. I know the reverse is possible through Bluestacks Cloud Connect. Can I achieve the other way round?

When there is any app installed through the Play Store(through your Gmail Account) the app gets listed under My Apps>Installed apps.
So instead of downloading it again from your mail separately (the apk file) you can directly download the apps through the installed my apps in your device(under options from the play store on your device).
For this you just need to login with the same account you had logged in with the blue stack. In this way you could at the least save the trouble from sending the apk file to the email and then again downloading it on your device.
Else you simply download the ADT to develop apps and later test it on you own device through the USB cable. For further questions regarding app development visit this site

With an installation of the official Android SDK, virtual devices are available to you (so you don't have to use Bluestacks).  You can simply install them via adb to your virtual Android device and test them there.  You can customize every aspect of the device, ranging from resolution, hardware buttons, modems, and software.
If you are developing using Eclipse, simply install the SDK and the plugins, and then press the "Play" button, and Eclipse will send the app directly to your phone.
Read more here: http://developer.android.com/sdk/installing/installing-adt.html

That would apply to Bluestacks and any other Android emulator as well. I e.g. run Android-x86 in VirtualBox, and can access it fine via ADB.


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Error: insufficient permissions for device, how to add permissions?
On trying to install an app on my Reliance CDMA Tablet, this is what happened.
aneesh@AcerAOD:~$ adb devices
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
????????????    no permissions

aneesh@AcerAOD:~$ adb devices
List of devices attached
????????????    no permissions

aneesh@AcerAOD:~$ adb install Dropbox/apks/videolan.apk
error: insufficient permissions for device
- waiting for device -

How do I set permissions? I browsed through Development and Security options in Settings application in my tablet. Could someone help me out? Possibly some command line helps! It is a little urgent.
My device runs Android 2.3.3.

Is the option to enable USB debugging on?  It should be in the same Developer Options section of the settings.

This is a problem with the permissions on your Linux system, not Android.

Yes. Debugging was on.

Have you setup the udev rules correctly on your Linux computer? For a reference, see my answer here.


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I updated Sony Xperia Sola (MT27i) and it do not work properly
I have Sony Xperia Sola (MT27i). I updated it from android version 2.3 (gingerbread) to 4.0 (ice-cream-sandwich), and now my phone can not work normally; Its RAM is always full and it need very long time to do something, especial when I need call, send messages or play something.
Please someone advised me something, what can I do?

Was this an official update from your carrier (or Sony,) or was it a custom ROM?

@Chahk This was official update


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Samsung galaxy s3 being slow and getting hot
I have a samsung galaxy s3 running Android 4.3, and it's always really slow and gets very hot sometimes. Does anyone elses phone do this? If so, have you found anything that helps?

Take a look in the battery settings, and tell us if any apps are using a high percentage of your battery.

It all depends the way you use your phone(more no of dents rough and tough use), The no of years of service of your battery.(the last time you changed your battery as recommended). Just follow these steps

Just try to avoid pro-longed usage of the device for gaming or
streaming videos or doing multi-tasking(streaming high definition
videos, parallel texting and downloading content all at once)
As this tends the battery to get heated up. Normally it should not
get the heat for just 1-1.5 hours of gaming
If your usage is more then you need to reduce it or else just
take your cell phone to any authorised Service Centre and get you
phone checked for the problems of heat and battery


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Why does Facebook messenger stays active irrespective of the Mobile data being enabled or not
I have noticed that in my task manager Facebook Messenger stays active even thought the mobile data is enabled or dis-abled.
I have tried doing the force stop many times when the app is not at all required.Also visited the site for some solution.
But when I enable the mobile data I observe that FB messenger was active all the while in the background and I automatically get notifications without activating the app.
Any suggestion or help accepted.

"I automatically get notifications without activating the app" It doesn't follow that it must have been active all the time. Most apps that use Internet are set to start automatically when a connection becomes available.

@DanHulme Lets say for example I open the app check the notifications and then close it by "Back Button" as you say that some apps are set to start automatically for this I do the force class and the app closes from the task manager again upon receiving the connection I get the notifications by default

Yes, that sounds normal. Even after the app was closed, connecting to the internet broadcasts an intent which can start the app again.


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Flashing stock rom through cwm
Can I flash a stock rom through cwm? I have a rooted Galaxy Mega, with cwm installed and want to upgrade to the new kit kat samsung firmware.
Thanks.

The best practice for flashing stock Samsung firmware is through Odin on your PC with the original USB cable. This will remove the root and return your device in stock condition with the desired downloaded Android version.
The process is very easy you just have to flash the MD5 file using ODIN in download mode you can follow this useful guide with images Samsung Stock Firmware downloading and flashing guide

Welcome to Android Enthusiasts! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. Otherwise, your answer becomes useless in case the link dies. For further hints, please see: How do I write a good answer.


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How do I get Hangouts to work on a straight talk optiumus showtime?
Phone Model Number: LGL86C
PRL Version: 59377
Andriod version: 4.0.4
Kernel version: 3.0.8
Software version: L86CV10a
I have called straight talk wireless and they told me that my model phone does not have an APN setting. Does anyone know how to get around this so I can use hangouts as my main message sending app? I use it for everything and I cannot send MMS messages without configuring the APN settings.


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Is It Safe To Root A Samsung Galaxy S5 (or other applicable Android devices) using Geohot's Towel Root Method?
A little while ago Geohot released a very simple way to root a Samsung Galaxy S5 (which can be applied to other Android devices as well).
Is it safe or too good to be true ?

It is legitimate. (Or as legitimate as an exploit can be. It isn't malware and if used properly has little chance of doing damage itself.)
Obviously the usual cautions apply with rooting any device. You may void your warranty. Be sure to read through the forums at xda or other guides to be sure how and what can be recovered if something goes wrong because of a change made with root access. You probably don't want to root your brand new phone and then not have any understanding or way to recover if something goes wrong down the road. Just do your research first. It will be worth the time spent.


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Can I download folders from Google Drive to my Android device
I have recently saved a lot of music and pictures onto my google drive and now I would like to save them from there straight onto my SD Card (in my S4). I know if I press on the file for a few seconds it gives me the option to save it but like I said I have a lot on there (roughly 4000 pictures and songs) so to do it all individually will take a lot of time I don't really have...
So my question - is there a way to download everything in a folder at once or is there a "select all" option in google drive?

Similar question: http://android.stackexchange.com/questions/40569/is-there-a-way-to-download-the-files-stored-on-google-drive-to-an-android-device

Worrked for me using Filigree Explorer on Android. Transfered the file to my phone. Hope this helps.

You can use Easy Download applicatoin (https://play.google.com/store/apps/details?id=io.dailytools.apps.easydownload). Downloaded directory will be put in your's Download directory on Android device.

You can alternatively use the browser and go to [drive.google.com/] and run the site in desktop mode. There, you can use the bar that's just under the search bar. Once you have navigated to the desired folder, go back to the bar I mentioned before, and tap your folder's name in the bar. After doing so, you will find a dropdown menu that will have options in it. There should be an option that says "Download", with a down arrow to the left of it. Tap that, and you're off to downloading the folder you had uploaded.
Hope this helps, cheers!

Okay I have found a third party app that lets me copy everything from Google drive in one easy step - Astro File Manager - it's a free app on play store, works brilliantly for this as you can select everything in the drive and simply copy it over to your SD Card.
This app will also work with dropbox and other cloud services.

A plus for Astro File Manager is that it can show you the size of a folder on Google drive

There is no need for a third party app. You can explore your Google drive storage like you can your internal storage from your phone's settings app. There you can then copy even folders to your internal storage

Open Files.
Press on the button to open the side menu.
Select Drive.
Go to the folder you wish to download.
Long press the folder.
Press on the 3 dots button at top right.
Press on Copy to...
Go to where you want to copy it on your phone.
Press on the Copy button at bottom right.

Please explain how will you do. You can use screenshots too.

Can't find any Copy to... button on the app.

Drive doesn't show up in the app (may of done in the past) :(

No Copy too.... Android 10.

Nope. Google Files mysteryously won't show the Drive... resorting to the old fast way of copying to a usb stick and reading on the phone with an adapter - always works.. clunky but works every time.

Google drive for android currently doesn't provide this option !
you could use file manager like 'ES file explorer' for android
you can connect to your google drive from it and easily copy folders

Why is android apps still in the pre-history of file management. I can't understand. I just want to add 10 music files from my google drive to VLC, on my android phone and there isn't a way. I'm switching my music to Dropbox, which I can work with.

I found this quick work around:

Install a small app called "Send to SD card".
In Drive select the file you want to download and click on "send..." > "Send to SD Card".
Now select a folder and copy the file.

this only allows you to send files. the question asks how to send entire folders.


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was my phone hacked?
I look at my dashboard and saw activity in a town 4 hours away from me and everything Google on my phone is acting weird, I think my phone was hacked what can I do? I have it in safe mode now, but I don't know what to do to fix it. Like trying to sign into my gmail account it kept telling me my password was incorrect over and over and I know I was putting the correct password. So it kept asking me to recover my account, and when I will try to click on the link to recover the account the same screen kept popping up saying incorrect password, like over n over n over n over

"everything Google on my phone is acting weird" If you want a useful answer, you'll have to be more specific. You wouldn't expect a doctor to diagnose you from just "everything in my body is acting weird," would you?

@DanHulme everything in my body is acting weird. I think some of the stuff I installed in it today may be causing strange wake locks. Brightness seems broken too. It won't go above 'dim'. Also I seem to vibrate randomly and silent mode doesn't seem to work. Did I mess up the kernel? I was eating popcorn and may have eaten a few kernels as well.

As for being hacked, it is possible, but there could be a simple explanation. When using Mobile data, the actual interconnection point with the Internet or the servers handling the ip address assignment may be in a different physical location than you, resulting in your connections showing from a completely different town. Heck, with Verizon, I would frequently get a different state.
As for the login issue, have you tried logging in on a PC to verify and/or reset your password? You need to isolate if it is the phone or the account first. If it is definitely the phone, you can try clearing app data for all the Google Apps (it will wipe settings for those apps so you will need to reconfigure them later--data will be re-downloaded from Google.
Also, though I haven't seen any reports today, yesterday there were issues accessing some Google services including logging in. Just in case that is the issue.


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Which rights are needed to add widgets to the desktop?
I installed xprivacy on my rooted device and blocked all privileges to the "Google Search"-app. Now i cannot add any widgets any more.
Which rights do I have to allow and how could I find out such questions my self?

That's usually the INSTALL_SHORTCUT (resp. UNINSTALL_SHORTCUT) permission – which might be present multiple times, as it's declared by the resp. launcher. To find out yourself, just follow the links I've given :)
EDIT: As stated in their FAQ, Xprivacy is no "permission manager", but a "privacy manager", and thus only cares for privacy-related permissions. Installing shortcuts is one of those permissions it does not care for (explicitly stated), so this is rather an unintended side-effect to be dealt with an update (fix) from the Xprivacy dev(s).

I cannot find no such permission in xPrivacy. related: https://github.com/M66B/XPrivacy/issues/672

I don't know how Xprivacy names them (and in which "tree" they are), but those are the names of the permissions responsible for this (see #3 in the issue you've linked). The first comment even suggests it's not covered at all (uh? It's not a "permissions manager", but just a "privacy manager"?) – which somehow contradicts with what you report (this "uncovered" permission being revoked). As stated over there, this must be an unintended side-effect then – nothing we can help with here (but thanks for the link, though!)


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How can I install MySQL on my Android device(s)?
There are good and bad choices available for the design of my system and MySQL seems to be the best available.  I need it to run client/server and support stored procedures & triggers and a host of other features.  But I also need a database that will run single-user on mobile devices when off-line, then synchronize with the on-line server when reconnected to the Internet.  The only database provided with Android is SQLite - which doesn't even come close to providing the features required.  Also, installing MySQL on Android devices would mean that I wouldn't have to support any incompatibilities between two different databases.  I do not need other features installed (HTML server, PHP, etc)... just MySQL.  How can I get that installed (and with my apps(s)) and have it work easily and efficiently (and not have to root or install a new ROM on the device)?

This answer should answer you: https://android.stackexchange.com/questions/61056/install-mysql-or-any-other-lite-weight-database/173658#173658

A search for "mysql" on the stores can answer this: there are several packages available, usually together with a web server and PHP. Best candidates are probably AndroPHP and Palapa.
My list of web servers with scripting support also have some of them (e.g. the two I mentioned), together with links to reviews, video demos, etc – which might make your decision easier.

This is a Free and very lite Mysql Server for Android that

support all cpus (armv6, armv7, armv8/aarch64, and x86).
no root needed
support Innodb

What is your connection to this product? You seem to have responded similarly to recommend this product multiple times today.

yes, I recommended it TWO times for different questions which haven't set as duplicated. I would like to give only a link to my first answer, but it will only show as a comment that people may miss.


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where is /data/preload folder on my [rooted] android phone?
I need to copy a file into this folder.
I cannot find this folder using the root explorer. Where is it?
I know it exists (or should exist) since system gives me an error message saying that file is missing in that folder.

You must have Root rights. It's in Root\Preload.

thanks @dfa for the reply. yes it is rooted. But, this is such an old post. I do not need it anymore. Just if you are curios, in the end I could not find a solution for this question.


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Change orientation whithout accelerometer
I didn't notice when I brough this phone the lack of accelerometer. And now is an ordeal to read/see certain apps and webpages. Is there a way to do this? I'm looking for a solution that works ootb for 2.2 through if there is a way that requires to upgrade I accept that too.t

To easily toggle the portrait/landscape mode you can install the app Power Toggles from the Play Store. Then add a notification toggle with the Rotation Control. Once enabled when you click on the rotation control icon it allows you to choose between the two view modes (port/land).
Being in the notification bar means you can almost always access it. I find it really useful!


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Hard-bricked with dead bootloader Samsung Galaxy Pocket (GT-S5300)
You can see the original files that I used for the partioning from
this website, as well as the other links : https://skydrive.live.com/redir?resid=F968213B88AADBF5!127&authkey=!AH0DTuPbDvUS7s4
I live in Sri Lanka, and apparently it is not official in my country. The Samsung Service Center does not support my phone, as I bought it from another shop.
I followed all the instructions in the guide. Everything went fine,
and it said that it had finished partitioning 512 MB from my 2GB
Internal USB Storage (My 16GB SD card was inside the phone as well
during the time of partitioning, but it was not partitioned and works
fine when inserted it to my SD card reader/writer). it came back to
the screen that said Re-boot into recovery mode. I pressed the reboot
into recovery mode, and the screen went blank. After that, I could not
boot it normally, and also into recovery or download mode. My phone is
a Samsung Galaxy Pocket (GT-S5300). My phone was rooted with a file (I
do not have that file, and the Dropbox download link was lost), but my
phone worked perfectly after that with no bugs. It ran on Android
Gingerbread (2.3.6) and out of the 960mb of internal space, about
880mb was full.
Note : The old links are no longer there and are dead. The only place
to get the files is from the link mentioned above.
I would appreciate if anyone could help me.
Thanks and best regards,
Sanoo

A carrier or the manufacturer with the correct JTAG setup are likely the only ones who can help you.  If you can't get even the bootloader to work there's nothing you can do as a user.

Thanks for your help, but the agents in my country don't support it, and I don't think the carriers have the correct JTAG. Is there any way to flash the boot-loader using Odin or something without going into download mode?


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How can I copy a NFC badge to my (rooted) Android phone for Daily Usage
For the Cafeteria a school we have NFC badges with which we pay meals or drinks.
I was wondering how is it possible to have the card on my phone? I lost it 5 times last year.
I've tried to copy the data on the card this didn't work so I possibly need to emulate the card on the phone.
Like i said it would be usefull to use it in such way and gives me something to brag about to my non geeky friends. B-)
My phone is rooted, Xposed Framework is installed (when this helps) I have Android 4.1.2 on My Xperia P it's stock.
Thanks in Advance

Not tested myself, but from its description NFC Porter looks like to be your candidate: replaces all identification cards and unifies them under a mobile app. Please let me know if that's what you're after – I will then make it an answer with some additional details.

Thanks Izzi it wasnt wat I'm  looking  for but seems i just haveto get the key of my lunch card.

The app will create a badge nativly and not port it from a badge, what i need to be done. So i will try this app and see what i can achoeve with it. Thanks for your Help

A closer look at their Pro version made me doubt as well it was your choice. Didn't see such an app yet (but definitely got your point). I'm just setting up a list of NFC apps you might wish to check with later (maybe in a few hours). Far from being complete, but if I jump into a candidate you'll find it there.

Depending on the type of card used in your school, copying is not a simple task: The data is may be cryptographically protected and you need to emulate the UID, an ID which gets transmitted by the card early in the communication process. Here are some tips:

At first you need to find out which type of NFC Tag our card is. You can use this app from the Google Play Store
If the card is a MIFARE Classic Tag you might be able to clone the data on it. These cards have had some security problems in the past.
Emulating the UID is not possible by default on Android (related)

But we developed an App which is capable of emulating the UID on some Android devices, for more information see the first answer here
It is also possible that your badge only uses its UID to know who you are. In this case there is no data saved on your card. If this is the case the app for emulating the UID could already be enough to have a badge on your smartphone ;-)

I hope this helps.


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Used (probably) inappropriate charger, touchscreen went crazy, permanent damage?
I used a plug with USB output than may have been inappropriate (output DC5V +/- 0.20V DC500mA +/-30mA). While it was plugged in, the touchscreen stopped working properly (touching one part of the screen would trigger another), I guess because the voltage was wrong? Is there any danger that I did some permanent damage to the phone or the battery? It wasn't plugged in for long.

I'm not really sure what you want us to tell you. If the problem went away after you unplugged and rebooted, then it's all good. If it didn't, then your phone is broken. We can't tell which of these is true because you're the only one with the phone.

No permanently damage I'd say. Sounds exactly the same like a case I had using a HTC charger on a Motorola device. It's not the voltage causing that, but most likely a slightly different use of the additional "X PIN", see: Why does my phone have erroneous input when connected to a non-OEM power source?

You can be 99.9% sure the touchscreen is fine. Battery wasn't damaged too. If the touchscreen still behaves erroneously after unplugging, then rubbing it with a soft cloth should help.
This is a common issue with cheap chargers. It indicates that charger may not be safe to use with any device - it may catch fire or explode. Prolonged use of such chargers can degrade battery performance faster than charging with a high-quality charger.
It wasn't a voltage problem - all USB chargers have the same voltage and you can use any charger with a plug that fits. Charging speed may differ, though - high-end smartphone and tablet chargers are faster than regular mobile phone ones.

Charging speed doesn't affect the phone, since the phone regulates the amount of amps it can take, not the charger. So if the charger can supply 2A and the phone needs 0.5A, it only takes the 0.5A. Also, if the charger can supply only 0.5A and the device (tablets usually) requires >1A, it simply refuses to charge. The power quality and consistency, however, is very important, and is the problem with cheap chargers as you mentioned.

@onik From my experience phones will charge from low amperage chargers at the rate charger provides, so maybe it depends on chargers and/or phone models. Also, if USB data pins aren't shorted phone will never draw more than 0.5A because it could be a USB host, not a charger.


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Authenication fail during root on AT&T Galaxy AT&T SGH-I337 using Odin in 4.3
My mp3 player was socks when played music file and hang device.so
I have try to root my Galaxy S4 AT&T SGH-I337 using Odin, but failed. I am getting these
<ID:0/003> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> CF-Auto-Root-jflte-jfltexx-gti9505.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/003> Odin v.3 engine (ID:3)..
<ID:0/003> File analysis..
<ID:0/003> SetupConnection..
<ID:0/003> Initialzation..
<ID:0/003> Get PIT for mapping..
<ID:0/003> Firmware update start..
<ID:0/003> recovery.img
<ID:0/003> NAND Write Start!!
<ID:0/003> FAIL! (Auth)
<OSM> All threads completed. (succeed 0 / failed 1)

Anyone help me, how to root this device.

What firmware are you running? MDL, MK2, MF3? Please add the build number to your question.

Keeping this question open, as the answer is valid.

The file you downloaded "CF-Auto-Root-jflte-jfltexx-gti9505.tar.md5" is not designed for the device you are trying to use it on.  GT-I9505 is the international model, and is different from your AT&T model SGH-I337.  Any rooting methods must be tailored for your exact device model.
I recommend heading to the section dedicated to your specific device on XDA-Developers forums and reading up on guides and how-to's.  Specifically, this post lists several rooting methods, depending on your phone's currently installed firmware/baseband version.


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What microphone can I attach via the 3.5mm audio jack @ Samsung Galaxy S4?
I need to attach an external microphone to my phone.
Can I do this via the 3.5mm jack on my Samsung Galaxy S4? What kind of microphone would it be?

I found this 3.5mm jack noise-reducing microphone on YouTube: Galaxy Samsung S4 External Mic for mobile phone and here is the mic quoted on eBay. I plan to test it and return some feedback here. I hope it will serve me well enough for the footage I need to create - some homemade lectures.

You can do that, but you'll need an adapter: the 3.5 mm jack on the phone is for a headset (with earphones and a mic), so it's not made to take a standard mic input. You need to find an adapter that's for plugging a microphone into Samsung phones. It might be tricky to find, but they're inexpensive.
Once you have the adapter, any microphone with a 3.5 mm connector will do. Stage mics requiring XLR and 12 V "phantom power" won't work: you'd need an extra device to supply power to the mic, such as a mixing desk with a 3.5 mm output.

I don't need a stage mic, but any mic that can clear noise very well. I prefer it to be standalone, is this possible?

As I say, any mic with a 3.5 mm connector will do. I can't recommend a particular one to you: that's way outside the scope of the site.


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How to remove member from viber group
How can i remove a member of a group which do not have admin. Admin left Viber and i have mistakenly added wrong guy. I and other members tried but we could not remove him. how can i remove him.

Viber Support page mentions this:

Removing participants from a group
  Participants cannot remove other participants from a group. Each participant can choose to exit the group at any time.

So it seems like your only choice is to exit the group and start a new one.


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samsung tablet 2 charging
Why does my tablet show a red x in symbol of it battery? Itried to plug in to wall and it does it also. Is it charging when plugged into wall plug with red x  in battery symbol.i haave been powering down to charge

The problem is that your tablet needs to recognize your charger as a charger that can provide 2A.  But only a Samsung charger will provide the right signal.  Any other USB power source will limited to 0.5A.  The result is that you need to get an original charger from Samsung.
See more explanation in my answer at How much power does a Galaxy Tab 10.1 charger need to supply?.

I have a similar problem with the Galaxy Tab 1. It means the charger is faulty and won't charge the tablet (or will charge it very slowly - which seems to be your case). Try squiggling it around a little bit until it charge, also consider buying a new Samsung tablet charger (the phone charger has a lower output, which is inadequate for a tablet), don't use the knock-off brands!.
If the red X is there even when it's not charging, then the battery is faulty, take it to the service center.


text:
HTC Desire X doesn't come up after software upgrade
I want to apologize in advance if this isn't the proper forum for my question; it might be a hardware problem.
I got a message on my HTC Desire X that a software upgrade was available. (IIRC I was on 4.1) I checked if there was enough juice in the battery, enabled WiFi, and downloaded the upgrade. But when I clicked "install" the display simply went black, and the device hasn't given any signs of life since.
What I tried
1. Remove and re-insert the battery
2. Recharge the battery. This shouldn't have been necessary, since it had enough power, like I said. But strangely, even after 24h of charging the power LED remains orange
3. Factory reset: volume down + power button
The battery thing bugs me. It was a good battery (normal charging times) and now it doesn't work anymore. Does the charger rely in the CPU? For instance, if the upgrade really went bad and the CPU doesn't work properly, what about charging.
IF the upgrade didn't succeed, is there a way to get the device working again?

Does the device waken when plugged in? Maybe try booting it in Safe or Force Restart it. Was it rooted?

It isn't rooted. And no, it doesn't wake up at all, not even when plugged in. So how can I boot in Safe or Force Restart (whatever that means)?

Hold down the power an volume up button try that

@user68932 - Yes, I even tried that. (Though the documented factory reset is with the volume down button)


text:
Facebook updates every two days
I just bought a Nexus 5 (US version) and for the past 2 to3 weeks I have noticed that Facebook  updates every time I am connected to Wi-fi, I mean I am a developer so I can imagine that updates come out but not so often I assume. Should I just turn auto update off or is there something else that can be done?

No, I have never enrolled in a tester program for Facebook!

Facebook does indeed update pretty often with random bug fixes as well as security, performance and stability updates. Often this depends on the company as well as the urgency of the update. Security updates tend to be urgent and are often shipped as quickly as the exploits are patched whilst minor bug fixes might be accumulated first and shipped as a larger update later on.
Automatic updates means less savvy users always have the latest version of the Facebook app and the relevant bug fixes and security patches.
If this bothers you, consider disabling automatic updates.
EDIT
This is the Facebook changelog taken from Changelog Droid

But I mean, is it so often that the updates come in, once ever day, or am I the only one facing these?

Take a look at the changelog I posted above and check if your updates correspond.

https://play.google.com/apps/testing/com.facebook.katana/
Check to ensure you are indeed not in the beta testing.

Unfortunately I am no more an android user.


text:
Is it possible to share file with one using NFC and another using bluetooth?
May I know if it is possible to transfer file from one phone using NFC to another phone using blue-tooth?
I know it is possible to transfer file from one NFC to another NFC. Also, it is possible to transfer file from one blue-tooth to another blue-tooth.

So you want to get on a plane and arrive in a car?

If I've understood correctly, you have one phone with NFC but no Bluetooth, and another phone with no NFC but Bluetooth, and you want to send a file from one to the other.
That can't work. NFC and Bluetooth are completely unrelated, they can't communicate together. If you want the two devices to communicate, they need to both use Bluetooth, or both use NFC, or both use Wi-Fi. It's as simple as that.


text:
INSTALL_FAILED_MISSING_SHARED_LIBRARY
I'm trying to install ISIS on my nexus 5. I downloaded the apk file but adb install says INSTALL_FAILED_MISSING_SHARED_LIBRARY. How can I install what is missing?
$ adb install com.isis.mclient.atnt.activity.apk
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
7279 KB/s (18120454 bytes in 2.430s)
    pkg: /data/local/tmp/com.isis.mclient.atnt.activity.apk
Failure [INSTALL_FAILED_MISSING_SHARED_LIBRARY]

Did you find any solution to this?

@NickRuiz No. I didn't.

I'd contact the developer, asking for dependencies (include your error report). Dev should now what is needed.


text:
What is the purpose of the cache?
I am using a phone with limited internal memory, and I noticed that my app cache has swelled up to 130 MB. What are the pros and cons of deleting the cache for certain apps? I don't understand what the cache is used for in the first place. Could someone explain?

What exactly do you mean by "the app cache"? There are lots of caches in Android and Android apps, so you'll get a better answer if you can be more specific. Just describe where you saw this 130 MB figure if you're not sure.

The 130MB figure comes from the folder named "Cached Data" under the internal memory. I was assuming that this is the sum total of all the caches of all the apps, but I might be wrong.

Cache:-Its a temporary storage file used by websites as well as the applications to store some data on your device.
Cache memory contains references(where to store the settings i.e. in which folder it should load or store the source file ), thumbnails(images to be displayed in the application) etc.
Advantages of Cache:-
1.Once you have already loaded the application then your application loads exceptionally fast when compared to the first time load.(Apps like browser will load your websites much faster as they are stored in your cache)
2.Instead of the application loading the wallpaper from the source(Phone memory) every time you load the application it will create a buffer memory from which it can directly load the wallpaper saving the processor of the phone from doing this task.
Disadvantages:-
1.The website takes some time to load the requested page as there's no buffer memory. This is not much big disadvantage as for the second time the page will load fast.
2.Although your pages are loading fast or the application is responding faster there is limited storage space which the Cache memory can store. Once it get's filled / is nearing to then other application/same application will get slow as there's no space for the application to operate.

On my GS3 I looked under running apps and selected show cashed processes
On clicking on one of them it gives the following description
Old application process kept for better speed in case it is needed again

I can only assume from this that cache is storing certain data when an app is first ran, so by deleting the data the app will run from new each time


text:
Put vanilla android on Samsung s5
Is it currently possible to put the default android on a Samsung S5 (Similar to the Google Play Edition of the S4)?

XDA developers is the place to go, and yes it is, there's TONS of AOSP and stock ROMs. Just ensure it's the EXACT device you have!


text:
Get CM safely on incompatible phone
My phone isnt compatible with Cyanogen mod how can i safely install CM?
Xperia P 4.1.2 rooted.

There are basically two options: help to get it supported, or look for an unofficial build.
I wrote some notes about helping to get Cyanogenmod supported on your device in my answer to Why isn't there a Cyanogenmod stable ROM for my device?. If you already have the specialist skills needed for ROM porting, you can do this yourself, but even if you don't, other volunteers at the Cyanogenmod might be able to achieve it with your help.
The only alternative is if there's an unofficial build. Because Cyanogenmod is an open-source fork of AOSP, anyone with the skills and the hardware can port it for their device and release that build. Unofficial builds can commonly be found by searching the XDA-Developers forum. They don't have the same quality control, support community, or updates as regular CM builds, and of course with an unofficial build the risk of the ROM being backdoored (so the porter can access your phone illicitly) is much greater, but if you're willing to take those risks it provides another way to get Cyanogenmod.
If there's no unofficial build, or you don't like the risks I've described, and you're not willing to help get your device officially supported, then you can't use Cyanogenmod on your device.


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Galaxy S4 Calendar settings not saving
I prefer Google Calendar over Samsung's built in calendar app on the S4, for notifications. I don't need to remove the latter, and can't seem to; I just don't want it to display notifications. So I change the relevant settings, but periodically they revert.
I completely turn off notifications in S Calendar (no tone, no vibration), and turn them on in Google Calendar (with a specific sound and vibration and popup notification). In Google Calendar I also turn on "Show week number" and set "Week starts on" to Monday.
After some testing it seems these settings stay in place for as long as the device remains on. After turning it off and back on again, all of the settings in both S Calendar and Google Calendar, including the ones I mentioned not related to notifications, have reverted to their defaults (with notifications ON from S Calendar and OFF from Google) with the exception of the tone that I set for Google.
I'm fairly sure that having my phone turned off and then on again is exactly what happened each previous time I've noticed that my settings reverted.
I've looked at this post, and none of those solutions (for non-rooted phones) work; the settings still get reverted when I change them, and Samsung's calendar can't be turned off in Application Manager. If both calendars are having this issue I'm not even sure removing S Calendar would fix it.
A commenter on the first answer there seems to have the same issue, apparently since a recent upgrade. That may be the case for me too, because I bought this phone a year ago, but now both the device info and the app info for S Calendar have Android 4.4.
Why would these settings be reverting on every restart? How can I fix this, besides just not turning my phone off?