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How to root a Samsung Galaxy Note 3 Neo bought in China?
I bought a brand new Samsung Galaxy Note 3 Neo here in China, just to find out that all the major Google apps are obviously not working.
I found some comments in this forum that gave me hope, apparently you just need to root it and install something, and then it works out like a phone bought in Europe.
Could anyone give me some detailed and simple advice on how to do that? I'm not experienced at all with this and I'm afraid to damage my phone entirely if I intervene there through rooting.

Try using this guide over the PrimeHowTo which I think is going to help you in getting things step-by-step. Nothing much is changed over here I guess, things are mostly the same and for self-satisfaction, I would say you can work with this one.

There are many clones that originate from the east like China. Meaning, things like CF-ROOT are made for that particular model and not a clone.
The build.prop could have been modified to state those things, most likely if it has a MediaTek processor - it's a clone.
If you are sure it's not a clone, root the phone, google TWRP and download their custom recovery for your device (as a tar file) then use Odin to flash the tar (AP). Then go to XDA Developers and flash any ROM from the recovery and it acts like a European device.

If it is a clone, do not flash a ROM for the Note 3 Neo. It will likely softbrick the phone. If it's a clone, it will not have the same hardware that the real model will have and the ROM will not work.


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Front camera on Nexus 4: no HDR, and downgraded from 2MP to 1.2MP?
In Nexus 4, why is the front camera downgraded to 1.2 MP only, as it was 2MP initially? And also, we had an option of HDR in that as well, which is absent in Lollipop 5.0.1?

From GSM Arena, the secondary (front) camera has 1.3 MP, and the camera settings provide 1.2 MP as the highest, so I'm not sure if it was 2 MP before. (Camera resolution is related tightly to hardware capability, so it's strange to be able to have higher resolution in the first place).
As for missing HDR, it seems it's caused by Google Camera, as reported by other on Google Product Forum. Google Camera is the default camera app on Lollipop. Previously, Android uses AOSP (Android Open Source Project) Camera as the default camera app, and it supports HDR on front camera. The intended solution is to use AOSP camera back, as some people have ported and published them on Play Store, since it's open-source:

Nexus Camera: KitKat Camera (free)
Camera KK (adware)

But how can camera settings be changed as it is the hardware property?? & are these camera options provided by you fully proven??

It's possible to use smaller resolution (MP) because camera app will capture raw image, and compress to designate resolution. As for HDR, it's a technology in photography, and it's not related to hardware. There is a different HDR technology used in stock and Google camera, so maybe that's the reason Google remove it's HDR for front camera. As for the options, I have tested it personally on my Nexus 4.

source: Stack Exchange

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

sort: votes


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Cannot flash a working custom recovery on a rooted LG G2 D802(T)
I own an LG G2 D802T. I have rooted it successfully with IORoot, but when I try to flash a custom recovery on it, it always fails.
I have also tried AutoRec for D802T. Although it flashes and I am able to enter into TWRP, the phone got stuck at LG Logo and the only option left is to flash a kdz through LG Flash Tool again. I have searched for it on several forums but was unable to find the answer. Also, I have tried several apps from Play Store as well.
How can I flash TWRP or CWM which work 100%?

rooting alone might not be sufficient. Is the bootloader unlocked? I have an LG O4X, and there you only can install a custom recovery after unlocking the bootloader. I'd wonder if that would be different for the G2.

What you need to do is that before you install recovery, copy the zip file for any ROM (I did CloudyG2 3.3). Then once you boot into recovery, wipe the cache and Dalvik cache, and then install the zip. Once the installation is successful, the phone will boot into the ROM without getting stuck at the LG logo. Once you are into the ROM, you can switch off the phone and try to use the key combination (vol down + power keys) to go into recovery. Or else download an app that lets you boot into recovery.
For more info, go to XDA Forums - [Complete Guide] Convert D802T to D802 with TWRP+CloudyG2+Dorimanx_Kernel. Look for my comment on page 2 for more details.

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

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


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Asus Memo Pad HD7 WiFi button is stuck at 'turning on WiFi...'
My Asus MemoPad HD7 (ME173X) is unable to connect to WiFi. When I go to the WiFi settings, the on/off switch is in the off position. Moving it to on causes 'turning on WiFi...' to come up, but nothing more happens.
Under Advanced settings, neither a MAC nor IP address is available.
It's the same error as encountered in this thread, except on a completely different piece of hardware. It's running Android 4.2.2 if that's any help.

Boot to the safe mode they try to turn on wifi.

By just getting back to date from 10-12-2015 to 07-12-2015, in my case to be precise, everything is back to normal, and here I am sharing my facts to help all those who are facing this ridiculous problem.
P.S. had been searching throughout the net for the solution and found some interesting details, would love to share for others (if they can be of any help).
Factory formatting/soft or hard resetting won't work, so as the phone rebooting will also be not effective. Setting back the clock (manually) worked like a charm for me (my mobile Lenovo Vibe X, carrier Vodafone). This problem arose, in my case, when I updated certain apps 5 or 6 OTA on Google Play Store (mainly Google inbuilt ones).

For other users who suffer the same problem as I came to read through their posts: when they updated their handsets (for any updates, irrespective of any app), their WiFi settings got disturbed causing the WiFi to lock while initialising, not allowing the user to switch On or OFF, just displaying the screen Wi-Fi turning on/Scanning/Starting/Searching/etc.
A common solution suggested by many (which even I was going to try ~ if above hadn't work) was to solve it by deleting /data/misc/wifi/wpa_supplicant.conf. It will reset all your saved networks. Have your phone rooted and delete the file through a root explorer or you can remove it via ADB (adb shell rm -r /data/misc/wifi/wpa_supplicant.conf. I'm not sure). You may backup it before, then open it with a text reader to see your saved passwords.
On many forums, this was the common solution accepted as the only chance to get rid of the problem.

Unmounted the SIM card and SD card then tried, and it worked for me.

How are they related to Wi-Fi and what led you to do that?

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


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Root Nexus 4 Lollipop without PC
Is it possible to root Nexus 4 Lollipop from the phone, without needing to connect to a PC of some sort? Since Lollipop update, Android file transfer cannot find my phone.

Community bump prevention: this question was closed because the question seems to have been abandoned (OP hasn't visited the site anymore after posting the question, and no answers have score above 0). If anyone can evaluate the existing answers, feel free to vote accordingly and reopen the question (or mod-flag the question requesting for reopening). For anyone else having the same issue, please post a new question and refer to this question as additional context.

Try Framaroot. I'm not sure if it will work with Lollipop, but it is the only option I can think of that does not require a PC. More info and FAQ in the link. Download the latest version from the bottom of the first post.

Go to http://kingroot.net, download and install their apk. Then run the app and try to root the phone. This is one of the best rooting app. Tried it with many many devices and it worked well.

2 questions: Are you sure kingroot will work on a Nexus? What about the side-effects of it? Seeing how many issues pop up here for one of them, I'm not sure I'd even recommend it as last resort.

Kingroot doesn't work on any devices. Tried and tested.

You can Root your device with any one of these 2 tools
KingRoot,
Kingoroot
its recommended to turn on oem unlock from developer settings as it won't block or trigger FRP,
apps which are mentioned above are used for mainly 3 reasons
1. No need for PC.
2. No Bootloops or other major issues like in flashing.
3. They first check for success rate and availability of root strategy for your specific device.
Note:
*NO ONE CAN GUARANTEE WHEN IT COMES TO ROOT WITHOUT PC.
*ANY APPS INSTALLED WHILE ROOTING WITH THESE APPS CAN BE REMOVED AFTER YOUR DEVICE GETS ROOT(u can even debloat system apps).
*ROOTING WITH SUPERSU OR MAGISK HAS HIGHER SUCCESS RATE OF ROOTING BUT U NEED TO FLASH CUSTOM RECOVERY MAY LEAD TO BOOTLOOPS AND BRICKING.
for devices running on lollipop there is a 50% probability of getting root without pc using any of these apps in your device just install Kingroot try to root if it fails then try kingo if that fails too then you need to flash custom recovery then use supersu or magisk zip to get root access
but rooting a device makes warrenty void I personally do not support rooting its purely your will


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Set different volume for multiple apps running at the same time
I want to use Spotify and a running speed tracker app at the same time, but Spotify is much louder than the other app and so I cannot hear it when both running simultaneously. Is there a way I can turn the volume down on one app but not the other, similar to volume mixer in Windows?

Probably you were looking for something like Sound Assistant version, for generic Android devices, but as it stands now, the former is available and it's only functional on Samsung devices (Galaxy editions running the latest versions of Android)
From description:
SoundAssistant

The sound utility available on the galaxy series Provides various
convenience functions related to audio

Allow you to control the media volume instead of ringtone when pressing the volume keys
Support individual application volume (You can control the volume of music and games differently)

Unfortunately, as it stands, it is not possible or at least feasible for other Android devices. Perhaps this feature will need some hardware upgrade on target devices to stream audio output on more than 1 channel, just as Izzy commented in his answer.
You may have to wait a little while until such a feature can be implemented in other Android devices. Meanwhile, you could get a supported Samsung device to enjoy this feature or perhaps automation with Tasker or Macrodroid.

Just installed the SoundAssistant app from Google Play on a Samsung Galaxy S7 running Marshmallow and it works perfectly; now I can hear MapMyRun time+distance stats over TuneIn Radio & Spotify, which is just what I was looking for.

@xavier_fakerat Cool. It's unfortunate that it only works on Samsung devices.

Sorry for the late reply. I tried with my Galaxy S5. It says it's not compatible. Apparently it requires Nougat or newer, and the phone is parked at Marshmallow.

Alas: Google Play now says: We're sorry, the requested URL was not found on this server.

@DanJacobson Try here from Samsung store: https://galaxystore.samsung.com/detail/com.samsung.android.soundassistant?langCd=en

Alas, a spanking new Samsung A13 5G, and my hopes were dashed: "This app is incompatible with your device."

That kind of "Mixer" doesn't seem to be possible. Quoting from the description of App Volume (thanks to Fiksdal for pointing to this comment):

Android manages one stream for all apps, so we can't set different volume levels at same time for two different apps.

A mixer could be possible in a limited way if you could tell the involved apps to use different "channels" (e.g. one using the ringer, one multimedia, one notifications, one alarms) – which might be possible for a root app (with some Xposed module being the most likely candidate). But so far, it seems nobody came up with such.
I don't know about any more up-to-date candidates or other alternatives, though some might have slipped through my nets. Be welcome to check my app-list for System Settings: if I happen to find one, it will certainly be added there.

It looks like these apps just set the overall system volume when you open different apps. OP is asking for a way to mix the sound from different apps at the same time with a configurable volume level for each app, simultaneously.

No idea then, @Fiksdal – I've never used any of those apps, so I don't know how they work. Probably such an app would require root then; but checking the XPosed repo (which would be the most likely candidate here), I couldn't find a matching module. Still, according to this XDA thread, App Volume should be able to do that. The thread also mentions App Volume Manager as a candidate, which looks like being capable (I'll add that to my answer now)

From the Google Play page of "App Volume": "Android manages one stream for all apps, so we can't set different volume levels at same time for two different apps." It looks like we're gonna need root access and maybe an Xposed module to achieve this (which would be fine with me.) I've looked at the other two apps in your answer, and they are also the same. Thanks for the suggestions, but it turns out they're quite different from what OP is asking for.

Afraid so, too – but I'm also afraid that's as close as we can get here. I didn't even find a matching XPosed module. Sorry for that.

Indeed, the design of Android itself makes it near impossible to do.
Therefore, my solution is to run one of the apps (the one that's supposed to have the lower volume) in an Android VM on the same device, using Virtual Android app.
This may seem like a bit of an extreme solution, but to modern devices with their plentiful RAM and >10-core CPU's it's usually not a big deal. And it's the only way to do it at present.
The fact that the app is running in its very own Android VM means that one can adjust the system volume in that VM without affecting the overall system volume of the host device.
Keep in mind that using the volume buttons on the device will only affect the host device, so you have to go into the settings app of the VM to adjust the volume.
It's great to run Spotify in the VM, because due to Spotify Connect it can be controlled remotely from the host, without having to enter the VM all the time.

How about simply removing the permission of the misbehaving app to make any sound? That could be done via adb even for non-root. But is there a permission for this only... without also zapping the app's use of the microphone?

@DanJacobson I do not want the app to be completely silent. I want it to make sound at a lower volume.

OK, I made a separate proposal,  https://issuetracker.google.com/issues/277029750

Years ago, Izzy wrote an answer stating that this desirable feature likely was not possible in most Android builds at that time.
Well, fast-forward to 2021, and it appears that it still is not possible in most Android builds.
Quoting from Yogesh Dama, a skilled Android developer, in the current release notes for their app WOW Volume Manager:

Note: app can change volume levels only if you open the app which you configured. there is no possibility in android to change volume levels for background running apps. only apps those are on foreground and open by user, only for those app automate volume control can work.

The keywords in that quote are "there is no possibility in android to change volume levels for background running apps".  When you have one app in the foreground, all other apps are in the background, and Android still provides no way to control the sound volume of background apps.
(Note that WOW Volume Manager allows you to change the volume per foreground app.)
There are ways around this Android limitation: App developers can include different sound clips pre-recorded at different volume levels with their apps.  They can also dynamically generate sounds at different amplitudes.  Finally, they can allow selecting frequencies that humans perceive to be at lower volumes.  After implementing one or more of these techniques, the devs can then can allow users to select a volume profile for their specific app, which will work even when it runs in the background.  I don't know of any apps that actually do this, but it's certainly possible.


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Viber already active on PC; want to activate the same Viber account on Android without SIM card
I already have Viber installed on my PC and want to install it on my Android now. Want to use the same old mobile number with Viber but I cannot receive SMS on that old number.
I don't know how to receive a Viber activation code on my PC Viber, for example.
How to activate Viber on Android without a SIM card?

but I cannot receive SMS on that old number Why?

for example, its a pay as you go SIM or, sim from different country and now i live in a diff country and forgot to deactivate the older number -- all contacts have your previous number... many examples..

I believe there is no way around it. You can ask their support to make an exception for your situation. I don't think you got an other choice.

As mentioned on the Viber Support Docs

You will receive an SMS message with your Viber access code

You will require to receive an SMS (or use the automatic callback feature) to be able to activate. You will have to necessarily use either of the above options to activate Viber on your phone.

Thanks but everybody knows this. Question is if there is any other way or not.

There is no way IMO. Hence I posted this


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SD card will not format within Android therefore cannot mount. Works fine on laptop
I bought a 64GB SD card for my Galaxy S3, and it worked perfectly. Today I turned on device encryption (worked fine) then I turned on SD card encryption. Since then I am stuck with the phone reporting that the SD card is blank or has an unsupported file system. Android gives me the option to format. The screen displays it is erasing, but then nothing happens.
I have tried removing the SD card and turning the phone on and off again. I have manually formatted the card using Windows 7 (ExFAT file system). I am able to read and write files to the card on the computer but the phone refuses to acknowledge a mountable SD Card.
I have also tried turning off the SD card encryption.
Any ideas on a fix?

I had the same problem...new 32gig sd card works just fine with Windows, but in my Samsung S2,S3, and EVO it says damaged, or unsupported, etc. I then read on another droid forum about this issue, and here is the easy fix:
Put your sd card into a usb reader for mem cards etc. You will notice that your card reader has a drive number like G:, or H:, etc. Make a shortcut on your windows desktop and make the shortcut location as (cmd). You may remember that cmd is the DOS-box command line prompt. Now your shortcut to cmd is on your desktop. Right click that shortcut and select "run as administrator". Now at the DOS prompt type
chkdsk <drive letter of the sd>: /r

Let it run through it's checks, etc. Once done just pop your sd card back into your phone and enjoy!

You can download the tool MiniTool Partition Wizard Home Edition and make a fresh format of the memory card. Here is a guide you can follow to complete this task.
N.B just ignore the steps about ext2 etc. and format using your desired File System. Ensure that you create as Primary.

Thanks Joel, I managed to workaround the issue. To get Android to recognise the card I had to turn off password unlock! (Went back to pattern). After which I was able to format and use the card again. I was able to reproduce the issue again. So it looks like there is a some defect with SD card encryption? Possible limited to the S3 and/or 64GB SD Card types... For now I will just live with Device encryption only.

alright man glad your card still works.

For reference.
I was able to fix the issue by turning off password unlock in security. I went back to Pattern unlock.
I was able to reproduce the the issue again. As soon as I enabled SD Encryption the Card becomes "Blank" and Android refused to use it, Format does nothing. Card is not mountable
So it seems there is a issue possibly limited to the S3/64GB Card with SD Card Encryption.
I have not been able to find any reference to this issue else where. Its not a show stopper so I will continue without SD Encryption.

authors: وليد تاج الدين


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My Navigation Keys and Status Bar are lost!
I'm using Nexus 5, Lollipop 5.0.1 (rooted), no custom ROM, and Franco Kernel. I was changing my Nav Keys by an app. By mistake, I hit restore and then after the reboot I found that my nav bars are gone and even the status bar!
Now I literally have to reboot to switch in apps. Please help!

Which app did you use?

Dirty flash Lollipop over itself, meaning don't wipe anything. All your data will be intact. If your using Xposed framework, it will have to be re-enabled. If necessary you can wipe cache.


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"not executable: magic 7F45" when running redsocks on Android emulator
I'm trying to get ProxyDroid or redsocks to run on the Genymotion Android emulator (x86). ADB shell into the device, run redsocks and I get not executable: magic 7F45.
I know it means that the version doesn't comply with the CPU. However, on Genymotion, I'm able to run a bunch of ARM packages with no problem (having installed the Genymotion ARM translation files).
I have compiled redsocks sources on my Ubuntu box (binary works fine on my Ubuntu x86), but when I copied the binary to the emulator, it still gives the same error message when I try to run it (not executable: magic 7F45). So, it looks like neither the ARM nor the x86 versions are working on the emulator.
I also have taken the redsocks binary that I compiled on my Ubuntu x86 box and pushed it to x86 AVD (standard SDK) - it worked perfectly. So it appears that the not executable: magic 7F45 error is not related to the cross-CPU compilation?
Is there a way to get redsocks run on Genymotion?

What file(1) utility says about your compiled binary?
Because compiling on x86-based PC does not promises your binary always will have x86 target platform - GCC can produce virtually any targets.

You can't freely copy binaries from your Ubuntu box to emulator one - even if all are x86-based, they use different basic OS libraries.
To compile binary for Android-x86 target you must use special cross-compiling tools\environment. See Android sources toolchain to take a look on how they configure gcc+ld switches to create android-x86 binaries on Ubuntu box.


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Pasting an image on Word app failed, copying its link instead
I am unable to copy an image from internet and paste it on Word documents. When I copy the image, the image's link is copied to clipboard and when I paste it on Word document the link is pasted.
Can anyone tell me why am I unable to copy image to clipboard and how can I do so?
I'm using Motorola Moto E on Android KitKat 4.4.4 if it matters.

I am not sure but maybe it depends on where you copy from. Also there might be some restriction on the file types you can copy (though images should be allowed).

@GiantTree I tried copying image from a webpage. I have tried copying with gif and jpg file types.

Does it say "Copy image" or "Copy image url"? There's a difference between these two ^^

@GiantTree It says Copy Image.

@GiantTree Added Images to the question.

I just tested it on my phone. It seems like word does not allow pasting anything but text. Maybe try another office app or paste it on PC.

@GiantTree Tried QuickOffice but didn't work. Any other office app suggestion.


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WIFI & Data Connection Problem
I have just updated my Moto G2 to Lollipop 5.0.2. I am unable to share files over WiFi via any of these apps like Superbeam, Xender, Cshare.
Also while using data connection, I'm unable to see the symbol H, H+ or E. Why is it so?

You won't see your mobile data connection when on wifi because you are on wifi. You are only connected to one of them at a time, either mobile data, or wifi.

Uncheck 3G option on the 1st SIM, and click on 3G option on 2nd SIM.

authors: Михаил Цымбал


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Create a range of numbers with Google Sheets
I am trying to create a simple range of numbers on Google Sheets in Android the same way you would do it on a computer: drag the corner spot down selecting 2 consecutive numbers.
So I would input "1", "2", and then extend to 80 by dragging down to have: "1", "2", "3", "4", ... But it does not work on Android.
Any way to achieve this?

Are you using the Drive and Sheets apps, or are you trying to do that in the browser?


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Incorrect button mapping when using Xbox 360 wireless controller on LG G3 running Android 5.0 Lollipop
When I plug in the Xbox 360 wireless controller dongle to my LG G3 running Android 5.0 Lollipop and load up a game such as Goat Simulator or Stranger Oddworld, the triggers are mapped to the right analogue stick.  This means my view constantly rotates and moves upward. This is because the inputs are registering -1.0. When I move the triggers toward the centre of movement, the view stabilises.
Can the triggers be remapped?

It seems as if the LG G3 doesn't support the wireless controller. Upon plugging in a wired controller, it worked perfectly


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SIM card cannot be detected, cannot open "SIM Card Manager"
The SIM Card Manager on the Settings cannot be opened. The SIM, contacts, and messages also cannot be detected on my cp. Even the mobile data can't connect. It says "Insert SIM card", but the SIM card is already inserted.
What is the reason for this?

Some possibilities:

The SIM card is defective
The SIM is inserted the wrong way
The tiny metallic connectors of the SIM card plug are deformed (this is my personal experience)

I had had a case when inserting a newer SIM into an older phone:
It seems the voltages were not compatible, and the older phone did not detect the SIM.
(Unfortunately the contract of the last SIM that had worked had expired in the meantime)


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Samsung Galaxy Tab 3 (SM-T110) missing tethering option
I just got my Samsung Galaxy Tab 3 (SM-T110). I want to tether my tab to my PC, but I can't find the tether option under more settings.
How to fix it?

I have similar problem with Samsung Galaxy Tablet S7 FE, the tether option is nowhere to be found :(

Download WiFi Tether Router by Fabio Grasso (costs $2), it's well worth it. You need to be rooted and have your WiFi turned on before you Enable Wifi Router.
Config settings for Sprint Galaxy Tab 3 7.0 SM-T217S:

Interface wlan0
Method 3 - HostApd
Encryption wpa2-psk or open (your choice)
Channel 1
Drivers nl80211
ApType master
"HostApd Patch" <- UNCHECKED

Hope this helps, it takes me a few tries with settings and a few apps to figure which one worked.

Search it properly under the more settings option or use the wifi tethering app to tether your device.

I've search it properly like 10 times. I go through everything, checked 1 by 1 and cant find it. I've tried easy tether app, I cant find the solution to the error. The error is no connection

Hi, note that the app is not available on the Play Store anymore (you may still be able to see the entry on the Play Store if you have installed it before).


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See caller info without unlocking on Moto G 2nd gen
In my Moto G 2nd gen, when a call arrives I can hear the ringtone, but the screen is black. I can't see who's calling. In order to see that I had to unlock my mobile. Is there any fix to this?

If I'm not wrong, it's because you have received an update of Lollipop 5.0.2.
To resolve this issue, go to Settings and change the priority of the "Phone" app to high priority, then go to Notification, and change way of notifying to "Interrupt for anything"


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Does deleting a Google account also remove his/her installed apps?
I have the HTC Wildfire S. My friend gave it to me and it already has a Google account on it. Now she forget the password. I was just wondering, if I delete the account, will it delete all apps that she already put on the phone? If I don't want to get them deleted, is there another option?

It will not delete the apps but unless you actually want the apps, I would recommend making a different Google account for your own security and your friends' security.Once you remove the email address, you will lose all progress or saved data on those apps though. So as long as you do not care about the saved data with that Google account, you should be fine.

Removing the Google account doesn't remove the apps installed over the device until or unless you uninstall them manually.

No. It won't delete all the apps. However, the app accounts which are directly linked with the google account will lose their data as well. So, if you don't worry about the data, go ahead and set it up as a different user.


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Unable to make an outgoing call after calling *31# on Moto G
I have a Moto G (1st generation) mobile bought in India. When I tried to make my Caller ID hidden from this wikiHow article, I called *31# and after that, I couldn't make a call to anyone.
Then I tried and miraculously I could make a call by adding a prefix of *31# to any number.
Please help me out fixing this issue.

I tried solutions from GSM Feature Codes but no help.
Called Motorola Customer Care and they told me to Factory Reset. I did it after backing up my data and now it works.

Just try #31# from your mobile, no need to do a factory reset. Please don't trust that forwarded message and all.

Dial #31# and call. After then it will start working outgoing calls.


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Platform-tools not showing in Mac OS-X
I've downloaded the Android SDK, and am running the SDK Manager. I've downloaded all of the packages, including Android SDK Platform tools (v 21.1.2). However, I don't have a folder called platform-tools anywhere on my system.
Running OS-X 10.10.2

What folders do you see under the android-sdk directory (or wherever you installed it)?

I only see "add-ons", "platforms" and "tools"

platform-tools folder is created as soon as you install SDK components using the download manager. It uses to be at the same level of the tools folder (there's no option to change that during the installlation process it should have been there).
The only suggestion I have is to use the manager again, remove it to then download components again. Use to be in the top of the list that shows in the SDK Manager window.
Anyway, I don't suggest you to install the sdk "too deep" into the directory tree. I had issues with that.

The library folder is usually hidden on a mac. Do this. Open Finder. Click Go. Hold the option key and library folder will appear. After that navigate to the android folder>SDK> and you will find platform-tools there. If that didn't help, you can find some more in-depth instructions here.


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What is Gapps (Google Apps)?
I have some questions regarding Gapps:

What is Gapps? Is it a custom ROM?
Do I have to install it on my Android 4.4 device?

GAPPS is not a custom ROM. It means "Google Applications" and usually includes Play Store, Gmail, Google Calender, and more. If you have some of these applications, then you already have some GAPPS.
Most users will only need to install GAPPS if they have installed a custom ROM that did not have GAPPS included.

Can u tell me how to install it?

You can install GAPPS by flashing a GAPPS zip file using either ClockworkMod (CWM) or Team Win’s Recovery Project (TWRP). Please see this page for details: http://wiki.cyanogenmod.org/w/Google_Apps#Installation

GAPPS is not required for normal smart phone functionality. Calls, SMS messages, internet and Bluetooth will work without.

"GApps" is an unofficial package distributed in several forms and places containing Google applications and frameworks, not a ROM. You don't have to install GAPPS, but many users may wish to do so in order to access Google Play store and some applications that depend on Google Play services. Smart phone functions such as calling, SMS messages, internet, Wi-Fi and Bluetooth work without GApps.
There's a replacement project MicroG in development and F-Droid is a comprehensive repository and "app store" for open source Android applications.

authors: อดิเทพ กันทะพงค์


text:
Schedule SMS, WhatsApp, and Facebook messages?
I would like to know if there is a way to schedule SMS, WhatsApp, and Facebook messages to be sent sometime in the future after composing them. Ideally, if some messages would have had to be sent while the device was powered off, I would like the message sending to be triggered automatically on start-up (configured to the particular app or service used to send the message).
I'm thinking of using an app to send respective intents to each app.
Is it possible?


text:
LG Nexus 5 is not detected despite having installed LG Universal Mobile Drivers
I use Windows 8, and ADB seems to not be able to find my LG Nexus 5 (D821) despite having installed LG Universal Mobile Drivers (LGUnitedMobileDriver_S498MA22_WHQL_ML_Ver_2.2). adb reboot bootloader failed to find the device.
I have set the device in USB debugging mode. It does not seem that LG provides anymore anything else than the manuals on their new website.
Which USB driver should be installed to detect LG Nexus 5, and where can I download it?

I found the issue. I tried installing some other generic LG drivers which were interfering with the other drivers. (LGUnitedMobileDriver_S498MA22_WHQL_ML_Ver_2.2)
To solve this:

I uninstalled the generic LG drivers (LGUnitedMobileDriver_S498MA22_WHQL_ML_Ver_2.2) like a software (Control Panel -> Uninstall or Change a Program)
Turn on the USB Debugging
Unplug and replug the device
In the Windows Device Manager the MTP was shown with an exclamation mark
Open it and ask Windows to find a driver automatically which it did successfully. You will need an Internet connection
Should work now

In case Windows fails to find the driver automatically, download Google USB Driver manually since Nexus (and now Pixel) serieses are considered Google devices.


text:
Can't download anything from Google play
My internal storage has 400+ MB and the SD card has 9 GB left (I know SD card doesn't really matter). I deleted a lot of apps and I still get the message "Not enough space on your internal storage" when I try to download an app that is 7 MB.

Probably related: http://android.stackexchange.com/questions/58168/why-am-i-constantly-running-out-of-space-on-my-galaxy-s2

This is not simple to solve. The solution that worked for me requires the device to be rooted, "Terminal Emulator" app and a file manager that can access to your whole file system (like "Root Browser"). I also have the "BusyBox" app installed which might be necessary to use the terminal emulator properly.
The first thing I did was to spot all files associated to the app I couldn't install. In my case, I achieved this in the terminal emulator with the commands
su
find / -name "*[some part of the package name]*"

The first command is to gain root privileges in the terminal in order for the find command to be able to search your whole file system. The second gives you a list of files and locations related to the app you want to install. The text in brackets [ ] must be replaced by a part of the name of package which distinguishes from all others. In my case, the package is the FB Messenger. The APK file is called com.facebook.orca-21.0.0.20.13.apk, so I decided to search this way:
find / -name "*orca*"

Then I deleted all the files and directories listed using the root browser (this is a brutal force method, may be it is not needed to delete them all...).
Finally, I rebooted my phone, let it start and installed the Messenger through Google Play Store. It worked :)
I hope this helps.


text:
Is it possible to set an encryption password different than lock screen PIN?
I set up phone encryption using a numeric password. Android 4.4.4 on OnePlus One (Cyanogenmod 11S). Now on the lock screen, I'm asked for the same numeric password (but instead of a text input field, an on-screen numeric pad is shown).
I would like to understand :

Is it possible to set a different PIN for the lock screen than the one I set before encrypting the phone? (without changing the current encryption password)
Is it possible to change the encryption password without wiping phone memory?

For the second question, in contrast to trejder's answer, the encryption password can certainly be changed without initiating data wiping or factory reset.
Short answer on first question is no, because encryption password will always be changed if lock screen password is changed from UI.

Please, keep in mind -- one problem, one question here. Two questions in one post is a bad idea.
Now:

first question: take a look here or here or in many other places,
second question: no, encryption is irreversible!

Once applied the only way to disable it / change password is to do factory reset (loosing all data / wiping phone memory -- as you write) and perform another phone encryption after that.


text:
Retrieve files protected by NQVault due to forgotten password
I downloaded NQVault to my Samsung Galaxy S3 and I moved some videos to the vault. However, I couldn't get back the videos because I forgot my password. After trying many times to find out how to change the password, I became frustrated, so I deleted the app.
My question is, is there anyway for me to get my videos back from the app due to the fact it was deleted?

Apparently, NQVault does not really encrypt the files, but simply does a byte-by-byte xor operation with a key that is generated from the password. Oh, and it does that only for the first 128 bytes. Since a byte can only take 256 different values, you can simply brute-force the key you need to "decrypt" your file.
The author of the linked post has even published the code for a brute force attack. All you need to do is to compile the c code, edit the bash script to recognize whatever mime type your videos are and then run the script.

No.
According to NQ FAQ,

NQ Mobile makes your privacy our top priority. Unfortunately, that
  means your NQ Mobile Vault password is kept secret, even to us. If you
  forget your password, we have no way to get it back; however, you can
  use Vault Online to backup all of your Vault content (including call &
  SMS history, photos & videos) to a secure private cloud storage, which
  you can restore back onto your phone or a new phone.  You can set up a
  new Vault password by uninstalling and reinstalling NQ Mobile Vault.
  Please note, if you reinstall NQ Mobile Vault with a new password you
  will not be able to access data you stored using your old password.


text:
What is SIM Toolkit and how do I remove it?
I've had this app (SIM Toolkit) since forever and can't seem to find a way to remove it.

(Click image to enlarge)

The application ID is com.android.stk , the apk path /system/app/Stk/Stk.apk and the source path is packages/apps/Stk/src/com/android/stk/StkApp.java - note the upper case S's. The module history refers to it as SIM Toolkit, SimToolKit, Stk App (different upper/lower case variants), SIM Toolkit app, or simply STK. The SIM toolkit application level service interacts with Telephony messages, application's launch and user input from STK UI elements.

SIM Toolkit brings up a list of things like horoscopes, music videos, chat etc. It depends on your service provider and you're not really missing much by not being able to use it! You can't delete the app if your phone isn't rooted.
You can remove it if you're S-OFF/using a custom ROM. Just remove stk.apk from /system/app directory
But in my opinion leave it, don't bother removing it because it's really small app.

Very good Reason to remove it: STK Attacks.

Unless you're from Estonia and use mobile ID service (a way to authenticate yourself and sign documents electronically using a SIM card with the signing app and certificates as the key). In this case, that app is actually useful and required.

Bad advice, sim toolkits not only are annoying, but also allows carriers to exploit interruptions which may make you subscribe to paid services by accident when they show popups at random times. There is no need to root (at least not anymore) or use a custom rom, you can remove it with developer options, although I do think this is still very poor on giving user a choice. https://android.stackexchange.com/questions/181557/how-to-remove-the-sim-toolkit-from-my-phone-without-root-or-flashing-any-rom

You should let it be.
If you use a launcher such as APEX, you can hide the icon from the app drawer.

Why let it be? Whats it's its usage and purpose? In my experience I found it much useless and was causing my smartphone to get unwanted advertising confirmation dialogs rapidly (there was a security bug from sim toolkit) and when I removed it everything goes very well without problem.

authors: Александар Красић


text:
Why do applications enforce read-write and read-only permissions for other apps to use it?
While reading a book, Android Wireless Application Development, it tells that

Applications might also enforce their own permissions by declaring them for other applications to use. The applications can declare any number of different permission types, such as read-only or read-write permissions, for finer control over the application.

I couldn't get why do applications need to set read-write or read-only permissions for allowing another application to use its applications.
For example, as illustrated in Android Developer, it shows how an application uses another Map application to show its address. But why do the app needs to set read-only or read-write permissions for allowing another app to use it?

Because if the app is storing your data, it's responsible for keeping it secret. To take an example, let's say there's an app to store something you'd rather keep quiet, such as your collection of Jason Donovan albums. This app would have a database with the relevant information inside, and this database is private to the app. No other app can read it (without root), and thus your embarrassing music taste is kept secret.
Now let's say the app author wants to allow other apps to use the same data. It could be another app by the same author, or he could widen it to allow other authors to access the data. That way, other apps would be able to add a home screen widget with a Jason Donovan album of the day, or create calendar entries for the anniversary of each album's release, or import  anything else. He does this by creating a content provider, adding it to the manifest, and publishing instructions for developers on the format of the data and how to access them. The content provider is like a server: it provides a way for other apps to query the app's data and get results back, without accessing the database directly.
If that's all he does, then any installed app can access the data. You install an innocuous-looking flashlight app that only has "INTERNET" permission, and suddenly it's able to find out all your embarrassing music and email it to scammers for blackmail purposes. Obviously this is undesirable: an app developer who would let this happen should not be trusted with your data.
The app developer can prevent this by creating a new permission, and giving it a human-readable description, such as "Read your favourite Jason Donovan albums". Creating the permission doesn't do anything itself: he also needs to change the content provider so that when an app queries it, it checks that that app has the permission before responding to the request. If the app has the permission, it gives it the data it asked for; if the app doesn't, it might choose to give it an exception (an error that tells the program what the problem is), or simply to return no or partial results. For example, it might tell the app about the Rolling Stones albums you're not ashamed about, but not the embarrassing Jason Donovan albums.
This way, the innocuous-looking flashlight app can't access your data. Before you install an app that wants access to the data, you can see "Read your favourite Jason Donovan albums" in the list of permissions, and you can abort installing if you don't trust the app author with that information.
How many permissions the app creates depends on what kind of access it offers other apps, and how fine-grained the controls should be. In our example, the app doesn't have a way for other apps to add albums, so there's no need for a read-write permission. Even if it did, it may be that the app only has a read-write permission, which other apps need to have to either see the list of albums or edit the list. This might be enough for a simple app like this. But for something like a social media app, it's more important to limit how many apps can send messages (or write content) on your behalf, so two separate permissions might be used in that case. It's up to the app author to decide how many permissions are appropriate for the app, giving users control over their privacy without creating confusing combinations that are hard to understand.

That's a good descriptive answer.But could you tell me why did you say about blackmail.I think for your secret songs no one would blackmail you or did you just meant to give an example.Is there any app that uses both read and write permission for giving data to another app.Also who really grants the permission(to another app):is it the author or the author acts on behalf of the user?Could you help me.

Blackmailing you about Jason Donovan songs is just an example. I'm sure you have other data on your phone that you wouldn't want in the hands of bad guys. The built-in Contacts app is an example that uses separate read and write permissions. Granting the permissions is no different to built-in ones: the user grants the permission when he installs the app that needs that permission.

:okay.But is there any need of write permission.I'm asking this because in a Contacts app even if one(another app) would add contacts to the Contacts app(if he has write permission) is there any security breach taking place?I think adding contacts would merely have no security issues isnt't it?

Write permissions aren't just about adding new data. One common practice of malware on PCs is to send all your data to the attacker and then delete it from your computer, or encrypt it, and then extort money for the return of the data.

:How could the example(malware on PC) deal with write permission?I think it just involves sending the data to the attacker.Do you mean that even sending the data from an app to someone is included in the write permissions?

No, the write permission prevents an app deleting all your data. That's a key part of the extortion. If you're still confused, I suggest you drop into our [chat] room, as comments are not for extended discussions.


text:
How to receive a notification for each new message in a conversation?
If I have a conversation with unread messages, I get no new notifications for new messages in the conversation. Is there a way to get these notifications?

On Android, go to settings, then bundle notifications. There should be a little bell icon next to each category that you want notifications about. This took me forever to realize how to fix, but much better now! Good luck.

By "On Android", did you mean "(In Inbox app) on Android"?


text:
How to avoid Clash of Clans update and go right into the application?
Whenever I open Clash of Clans, it gives a popup saying,

Update is available!

Good news! A new version of the game is available

There is no cancel option. No matter if I click the back button or tap outside the popup, it always leads me to Play Store page.
How do I avoid update and continue playing?

It seems there is a version check inside the app. The only thing that I could think of is to use hacked APK, but that can be considered as cheating and thus, illegal and off-topic here. I couldn't provide any answer, you may wait for other answerers if there is a legit way to do that.

If they have locked it to version checking (entirely possible as it has an online component IIRC) then you will probably have to update it! As Andrew said anything else would be illegal, and again would possibly run into issues like this anyway. Is there any reason you can't update it? Also it might be worth contacting the developer and asking them about this. Use the contact link in the Play Store, not a review.

@RossC sure. I will.

Bad news: For some apps, especially games, you are not allowed to play without updating it -- especially if it is connected to the net.
You will not be able to legally bypass this restriction.


text:
Samsung Galaxy S2 recites any actions that I do. How to turn it off?
My phone won't stop talking. It won't let me scroll or see other settings, I've tried to go back the way I did and turn it off, but I can't scroll down or up. I have to double click on applications to open them everything I touch. It speaks to me what I touched. How can I reset that?

Did you try AndrewT's answer after his edit?

There is a big chance you turned on TalkBack accessibility option by accident. You may want to turn off to fix this "issue".

Enable or disable accessibility services.

From the Home screen, touch Applications  > Settings > Accessibility .
Touch Accessibility to toggle a checkmark.
Touch TalkBack to toggle a checkmark. When enabled, recites menu options, application titles, contacts, and other items when scrolling and making selections.

If an Attention prompt appears, touch OK to continue or Cancel to exit.

(copied with slight modification)
To scroll when TalkBack is active, use 2 fingers when scrolling. From Google Support

Tip: To scroll across screens, use two fingers along the screen.


text:
"Sync is currently experiencing problems. It will be back shortly." error message appears under the Sync settings
On my Samsung Galaxy S4, the "Calendar" under "Sync settings" in my Google account disappeared. Under the Google accounts at the bottom, it reads

Sync is currently experiencing problems. It will be back shortly.

How do I fix it?

In my case there was a problem with emoji characters in some names. I used "Contacts Sync Fix" program to fix it

The phone wasn't connected to the internet. As soon as it was syncing worked. You'd think the error message would be better than the generic one "Sync is currently experiencing problems. It will be back shortly"

Samsung Galaxy S9 exchange calendar sync not working anymore:
Error message (in Settings -> Cloud and accounts -> Accounts ->  -> Sync account):
'Sync is currently experincing problems. It will be back shortly.'
Go to Settings -> Cloud and accounts -> Accounts ->  -> Account settings. Click on your  -> (scroll all the way down) Server Settings -> Incoming settings.
Enter new password. Click done. Wait for success message.
Go back to 'Sync account' and hit Sync Calendar, Sync Contacts, Sync Mail.

Try to take a look at this website, seems reasonable up to date: https://appuals.com/fix-sync-is-currently-experiencing-problems/

FWIW: in my case I had to set up PIN protection to make it work because my "company policy required it". Of course there was no helpful error message about it :(
Sidenote: I can't reply to this thread b/c of lack of karma or something

@ssasa this question has been unprotected. Feel free to post a proper answer. Thanks.

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@AndrewT. I don't get why you are tagging random people to answer questions? This question is nearly 10 years old as well. Seems like some automated process from your part?

@PieterHeemeryck I came across this question because it was bumped, then I noticed the users who posted an answer on the comment thread because they didn't have enough reputation to answer a protected question. After unprotecting it, I'm tagging them just in case if they want to post their comment as a proper answer. Sorry if it looks like an automated process, I'm just doing my job as a mod :/

Not closely related to the issue, but it solved my very similar problem with contacts sync: The contact option was not listed in Android's (v.6.0.1, Marshmallow) Settings / Accounts / Google sync menu. The problem was that the Contacts Sync application had no access right to my contacts. To fix this, I switched the Settings / Apps / Gear icon / App permissions / Contacts / Google Contacts Sync toggle. After that, it started to sync, but I got the same 'Sync is currently experiencing problems'. It turned out that I exceeded the Google API call limit for the day, so after 24 hours, it synced successfully.
To figure out what the problem exactly was, I connected my phone through USB to my PC, enabled debugging on the phone, used the adb logcat command from the Android SDK, and examined the errors/exceptions in that log. This way, you can get to the bottom of your calendar issue as well.

We had the same problem, and to make a long story short, tried all the answers we found online (clear cache, clear data, reinstall Calendar, delete, then create Google account, but no factory reset).
The problem for this phone (Samsung Galaxy S3) was that we had restricted background data on Google Play Services. Once that was enabled, the calendar synced right away.
Home> Settings> Connections> Data Usage> Scroll down to Google Play Services, and make sure to uncheck "restrict background data".

Settings->Apps->Google Play Services->Permissions->Contacts -> Enable for Google Play Services worked for me.

In my case, the sync issue was with the WhatsApp account. I went to the app permissions and checked some of them. Worked.

In my case, the solution was Settings>Apps>Google Play services>Storage>Manage Storage>Clear All Data.

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I tried EVERYTHING.
Finally came across the answer - turned off Power Saving (which I normally keep my phone on) and hey presto, everything syncs again.
So easy.

Turning off power saving Setting>Account>Google> (Top right) Sync now. Works for me. Thanks

Solved My Problem with this Account>Google>Sync Now.
Thanks.

Sync is currently experiencing problems. It will be back shortly.

Go to Settings → Accounts → Exchange → Incoming Settings and change the security type to SSL/TLS from SSL/TLS (accept all certificates) and there you go. All the emails, contact, calender will start syncing.

I fixed this by installing Google Calendar. I already had Calendar installed, from gapps (needed with CyanogenMod). Now I have two Calendar apps installed, both called the same thing. Sync suddenly works, and the new calendar has a bit nicer UI.

I had both the standard Calendar and Google Calendar installed, and the fix for me was disabling my Google Calendar sync in the standard Calendar app.

Installing Google Calendar fixed the sync issue, and both S Planner and Google Calendar suddenly started working.

In my case, ONLY the contacts didn't sync, everything else (calendar etc.) was fine, but the steps should apply to calendar as well, as it also uses dedicated services and the play store.
I followed this guide and got it working perfectly again, without loosing any data or having to restore anything.
Cannot sync contacts on Android 11 - This account already exists on your device
It links to a few pictures of the Android UI, but the short version is:
Prereqs.: Uninstall Battery Saver / Task killer / Booster Apps temporarily,

Reset App Preferences
Select Automatic Time Zone
Battery Saver select off
Remove Battery optimization for Google Contacts Sync
Allow Mobile Data usage for Google Contacts Sync (the obvious part)
Select Contacts Permissions for Google Play services and Google Play store (the tricky part)
Clear Data in Contacts and Google Contacts Sync (the scary part)
Disable Google Contacts Sync and wait a minute and Enable Google Contacts Sync
Re-start device (essential!)
Check sync settings.

According to the logs from adb logcat the permissions actually caused the problem, but all previous attemtpts to grant those permissions failed.
After following this step by step, I rebooted, opened the Contacts app and was able to add the already signed in google user. After that, the contacts got populated and sync works again.

The answer for me was related to Google Play Services. But in my case it was a matter of enabling its permission to access Contacts. Settings->Apps->Google Play Services->Permissions->Contacts

To sum up my fix:
I checked my online Google Calendar settings to ensure mobile syncing was active. It was.
On my Samsung Galaxy S4, I uninstalled Google Calendar & re-installed it a couple of times. Still kept receiving the syncing message.
So I removed my Google account & reconnected. That's when I received the message "The process android.process.acore has stopped".
Based on users' comments, the best fix would be to reset to factory. Which I did and all is good except for losing SMS history

You could have used SMS backup apps to backup your SMS messages to Google drive.

I have just had the same problem after an Android upgrade on my Sony Xperia Z5 and luckily fixed it. I had to delete the account and then re-add it.
I think I know why this worked as I have seen a similar problem before (with Dropbox about 2 upgrades ago): with this new Android version, a new security feature was added and Exchange couldn't automatically access my calendar/contacts -> it wasn't allowed.
When you re-add the account, you are asked if Exchange is allowed to access contacts and calendars. Once you say "yes", all works.
I really think Android needs to handle the addition of new security features to existing apps in a more elegant manner.

I had the same problems and finally was able to fix it.
I always try to use my phone on power saving mode to save battery, after the last update I had some troubles with that feature because many apps don't work properly. Well, all I had to do was disable power mode and sync again and voila, everything sync perfectly.
I hope this helps.

In my case, the error was with my Samsung account on my GS4.
When I pressed 'Profile' underneath the sync option, it prompted me to install an update which may have been the cause. When I pressed 'Yes' it failed to update. However, once I restarted the phone the update successfully installed.
For anyone with this problem, I would advise restarting your phone, then (for Samsung accounts), go to Settings > Accounts > Samsung account > Profile
Install the update if prompted. Lastly make sure Sync is enabled in the notifications bar.

Just adding to the pool of possibilities.... Make sure your date/time is correct. All I had to do was adjust it and everything went back to normal.

If your device is rooted then delete the folder under
/data/data/com.android.providers.calendar and reboot. (I used Total Commander.)
For problems with contacts sync the folder is /data/data/com.android.providers.settings.
In brought back the sync on my device which has been constantly "experiencing problems" for about half a year.

I had a similar problem, but with Contacts instead of Calendar. It turned out that all I had to do was to force stop (Settings -> Apps -> Contacts -> Force stop) the Contacts app and start it again.


text:
How to install CWM Recovery in non-supported device, like Karbonn Titanium S5 Plus?
I have Karbonn Titanium S5 Plus. I want to install CWM Recovery, but my phone model is not supported.
How to install CWM Recovery in it? Also, can I install it without using a PC?

Because CWM does not support your phone model, I assume you should search for an alternative  recovery (TWRP, Philz).
Most installing methods require something like fastboot or simply flashing an image to your phone, which is hard without a PC (Mobile ODIN may do the job, but I don't know about supported phone's).
For custom ROMs search xda-developers for your phone and that particular model in the appropriate subforum (look out for Android Development). There should be tutorials on how to install ROMs, recoveries, kernels etc., too.


text:
Is it possible to increase the RAM on Android devices, like a phone or tablet?
I recently purchased a Samsung Galaxy Note Pro 12.2 32GB (SMP900) tablet. I love the tablet. However, the RAM seems inadequate.
I use the tablet to do lots of movie streaming, playing games, digital artwork and I transfer my photos from my cell phone to the tablet (sometimes - most of the time I send them to Google+ cloud account.)  I really want to make use of the great features on this tablet and would appreciate any advice.
I always close down programs I am not using. I empty my cache and browser history frequently, but seem to be running out of RAM quickly. I am using Clean Master (also has a speed booster and cache cleaning program with a virus/malware protection program). But to do the types of things I really want to do with this tablet it seems I need more RAM.
Is it possible to add RAM to these tablets?

On phones and tablets, RAM is part of the device hardware and generally not user-upgradable (despite jokes to the contrary). A quick check of the galaxy Note Pro shows it has 3GB built-in- quite decent actually. I'd suggest uninstalling that "speed booster" app or other "virus" and "task killer" apps-- Android isn't Windows.
It usually doesn't need extra stuff like that. Decent security/malware detection is already a part of Google Play, and those listed "features" raise alarm bells for me. I also saw reviews saying it contains spyware.
The truth is, you are making this harder than it should be.  A normal Android user typically should never be concerned with manually quitting programs you are not using as new Android devices very efficiently manage their performance and kill background apps automatically.  Similarly, you should generally NOT be emptying app caches manually, ever, unless a particular app is giving you problems- and certainly not "regularly".
In short, the stuff you are doing thinking you are improving performance is best left to the system, which can do it much more effectively and efficiently than you can.  Android devices should be VERY easy to use with minimal maintenance-- please beware many 3rd-party apps that may lead you to believe they are necessary for improved performance.  Task-killers and such may actually degrade overall performance as they waste memory and processing time interfering with thigns that Android itself is finely-tuned to do.
Perhaps the best "speed up" tip I can offer: disable/uninstall apps you don't use (some of which may be running in the background), especially bloatware and adware that are shoehorned onto your phone by unscrupulous wireless carriers.  An even better alternative-- look into bloatware-free aftermarket ROMs if they are offered for your phone (the best ones cost nothing, by the way) or root your phone and remove that bloatware entirely from the system.
(Note: Originally posted this as a comment, but by request expanded it into an "answer")


text:
Decrypting wpa_supplicant.conf on Samsung Galaxy mobiles
When I do cat on wpa_supplicant.conf file on Samsung mobiles, I see that the passwords are encrypted. But when I open the same file on LG mobiles, I can see the passwords in plain text.
This is what I see on my Galaxy S5. The information below is for my network which has a WPA password 77807780 (psk is the encrypted passkey):
network={
        ssid=""
        psk=fce6c4f64304b00c5783199bbd2b1f91
        key_mgmt=WPA-PSK
        priority=10
        frequency=2462
        autojoin=1
        usable_internet=0
        skip_internet_check=0
}

Is this a feature on Samsung mobiles? What kind of encryption is used to encrypt the password and how to decrypt them?

Yeah, I can confirm that it's in plain text on LG Nexus 4. Researching a bit also confirms that Samsung does encrypt/hash it, but I haven't found the method yet.

On my Galaxy S5, it uses OpenSSL's EVP_Encrypt* methods with the EVP_aes_128_cbc cipher, i.e. AES with a 128-bit key in CBC mode. It makes sense since all encrypted PSKs I've seen have a length modulo 32 hex chars (32*4 bits = 128 bits, the block size of AES). No idea what's being used as the key or the IV.

Related: Retrieve WiFi password, How to recover stored wifi password?

Use wpa_supplicant's wpa_passphrase tool to create your own "real" psk. Actually, the plain-text psk (double-quoted) must be processed at every startup and config reload to generate the real, 64 hex-digit (256-bit) psk. So, using wpa_passphrase to manually create the fully-processed PSK actually optimizes wpa_supplicant's startup & config reload time. :)
About decrypting them... wpa_supplicant uses an AES-based cipher, which is well respected. I think TKIP is deprecated and possibly exploitable.

I got a solution:

Go to root browser
Go to /etc/secure_storage/.system.wpa_supplicant then delete this folder (only ".secure.supplicant.conf"), then reboot.
Strange number gone

Note: It only works for Samsung devices, all saved WiFi hotspots will be lost for the first time.

Find the following line in build.prop:
ro.securestorage.support=true

and change it to
ro.securestorage.support=false

Then reboot the device. Now retype password of your Wi-Fi network.
If your phone is rooted, you can view passwords either by reading wpa_supplicant.conf file or by installing "WiFi Key Recovery" app.

currently i don't have a device to test your solution on, but anyway that's not what i asked for i need to know the encryption type and how to decrypt an already encrypted password

This is the same as the one above that deletes the secure storage folder, but applies to everything that uses Secure Server.

@MOHAMMAD it's unlikely you will ever decrypt one once encrypted.


text:
Unable to upgrade and install WhatsApp
I didn't check WhatsApp in a few days, so I tried clicking into it, I got a message like "This version of WhatsApp became obsolete on <specific date>. Please go to the Play Store to download the latest version".
I clicked the upgrade button and was led to the Google Play Store where I was told to sign into my Google account, but it didn't allow me to.
I uninstalled WhatsApp and rebooted my phone. I tried downloading WhatsApp and I'm still told to sign into my Google account.

Just login to google play store with your email. If you can't, please be clear as to what is the problem.

Could you tell us more about the device which you are using? The model name and OS version?

A quick solution while issue with google account is unresolved, download newest apk from apkmirror and install it. Enable unknown sources in setting first.

What Android version are you using? You could be using an old version of Android that WhatsApp no longer supports.

Download it from the site instead: http://www.whatsapp.com/android/

Try this :

First go to settings-> Find google play store -> Clear Cache, Now Reboot your Phone.
Again go to Settings -> Account -> Add New account [If there is no active google account], Add your Gmail ID and Password - Sign In.
Now go to Play Store-> It will automatically add your Gmail account, Find Whats app in Play store-> Download it, Hope that works!
Even if it not works, then you can download whatsapp from the whatsapp website. [Link is there in the below comment, Follow it].
Check this links too:

1) https://www.androidpit.com/forum/459499/can-t-sign-in-to-google-account
2) http://forums.androidcentral.com/general-help-how/346959-solved-can-t-log-my-google-account-my-samsung-galaxy-s2-plus-gt-i9105.html

Just remove your old account from Settings > Accounts , and add it again and then try upgrading your whatsapp.

authors: Абдуллох Инагамов


text:
fastboot does not discover my device
I want to connect my device (Omega T107) in fastboot mode.

I reboot in bootloader mode (adb reboot bootloader)
Screen is black(0 light comming out of it) computer can discover it and driver installs properly
fastboot devices returns empty list

What am I doing wrong ?

Does adb get-serialno show you the correct device number?

What platform are you accessing the phone from? (Windows, Linux, ...)

fastboot is just one of the protocols to talk to the bootloader. Some manufacturers choose to support it (e.g. Google, HTC), others choose to make their bootloaders talk some other protocol (e.g. Samsung).
After googling a little bit, I don’t think that the bootloader of your device supports fastboot (at least, there are no mentions of this). Most likely, you will need a special tool from your manufacturer that will be able to talk to your device in bootloader mode.

The command 'fastboot devices' shows only the devices it can access properly with fastboot protocol.

Check if you have sufficient rights for accessing the device (either do it with root or add aproppriate UDEV rules).
Check if you really started the device into fastboot mode

How do I make sure I've started in fastboot mode when bootloader is a black screen ?

Look at this answer that explains how to create the udev rule.


text:
Android in app purchase issue: You already own this item
I am interested in purchasing the Game from Google Play Store, but when I try to purchase it using the buy Button in game menu it takes me to Play store and there I get a message "You already own this item", but when I click on details button in the message box the play store application crashes.
Now I don't know even if I own this or not. If I own it then why didn't I received this full version and if I do not own it then how I will be able to purchase it?

Which app has this problem? Some apps do their own transaction restoring on the first start (and don't support rebuying. I had that with an earlier version of pinball arcade some time ago). File a bug report for the app or clear the app data and restart with a working internet connection (leave droidwall if you use it disabled).

Sometimes this happens when there is an error while completing the transaction. Can you do the following: Settings->Apps->All->Google Play Store press Clear data and Clear cache, then check if the issue is resolved?

Thanks for your reponses
The Game is "Rise of Glory", I tried to clear the cache and clear the Applications data (Play Sore and the Game) but the issue is not resolved. I am still receiving the same dialog i.e. "You already own this item", clicking on the detail crashes the play store application after a message "Play Store Stopped Unexpectedly ".

Ok, This is a known issue and you can find the issue at
http://support.google.com/googleplay/bin/static.py?hl=en&page=known_issues.cs&ki_topic=1319135
[#702829] Falsely receiving error: "You already own this item"
Google Technical team is working on this and hopefully this issue will be resolved.

Hmm the link to the issues doesn't work. If you got a working link, feel free to post it as answer to your own question.

When you go the the webpage of play.google.com => apps => may apps, does it appear there?

Did u try purchasing from web https://play.google.com/store

Summed up from the comments:
This was a known issue with Google Play, which meanwhile is resolved (read more on this Google support page, opening the "fixed/resolved" item, and there you see [#8849329] Falsely received error: "You already own this item", together with more details).

The best option that worked for me was to install the following app that will allow you to download the app again "Purchased Apps (Reinstall your paid apps)" https://play.google.com/store/apps/details?id=com.azefsw.purchasedapps&hl=en

This did not work for me. Continues to say ERROR you already own this item I own it but can't download it. Thing is I did a factory data reset and list it that way.


text:
Poor battery after update to Android 4.0.3
I updated my non-rooted Samsung Galaxy S2 from 2.3.5 to 4.0.3.
Now, I recognize a significant decrease in battery lifetime.
Any idea what may cause it and how to get around it?

This question is extremely hard to answer without any details. At least look at the "Battery" stats in your settings screen and supply some stats on what's using the battery.

I agree - my intention was to ask if this may be a common problem with that Android version or device.

Concerning current battery consumption - I see 50% for the screen (allthough it's off for most of the time) and 25% for Android OS and no application with significant consumption.

It's normal for the screen to use most of the battery, if the Android OS takes a lot even in standby you should probably try a factory reset/clean install.

This could be caused by WakeLocks (see: How to deal with (orphaned) WakeLocks?). Please check at least your battery usage screen for the indicators described in that questions answer; if they match, follow the steps there (and let us know here).

@Izzy: Ah thank you for the hint, but I did a clean install in the meantime and an update to 4.0.4. The battery consumption is back to normal (if one can call this normal that a phone sometimes doesn't even survive a day of usage...)

@Geziefer Glad you solved the issue! Would you mind to present your solution by answering your own question? That way it's easier to see this Q is answered. As for the runtime: Well, it's no longer just a phone, it's rather a pocket computer which can handle phone calls as well. Would you complain if your laptop "dies" after 18h on battery? ;) Still, I hope they can increase the runtime to 7 days at least... Hope dies last.

@Izzy: well, thing is, I wouldn't call it a solution, if one has to completely reset his phone to get an official update working correctly, that's why the question is not really answered even though I 'solved' it that way.As for the battery, I do know what this little thing is capable of doing, but isn't it a bit like driving a Porsche with a 10l fuel tank?

I'd consider it better than to sit around and whine "my battery is empty". But OK, up to you. And sure, more powerful batteries wouldn't hurt XD


text:
Cannot set up a yahoo email account with @yahoo.com.au address (.au not accepted)
The mail app on my Samsung note does not allow me to set up my email account with the full Yahoo address: it does not permit adding the .au at the end of the address. If set up the account like this, then I receive all my emails, but any I send out from my samsung misses the .au domain suffix -- resulting in anyone replying, not being able to respod without it bouncing back to them. They obviously do not notice the .au is missing.
I've contacted Yahoo, who say my address is with .au and anything without that will not get through.
I've tried resetting my samsung by removing my yahoo adress, and replacing it, but it will still not accept setting up the account with the .au and only simply as @yahoo.com.
Is there any solution known?
Tim

Tim, could you please specify which mail app you are using? Stock mail (the pre-installed) -- or the Yahoo mail app? Or something else altogether?

I would guess that Samsung failed to provide proper support for Yahoo Mail. Therefore I recommend that you install the offical Yahoo Mail app. It should work out of the box.
Antoher approach is to forward your yahoo mail to your google mail. They advantage is that you don't have to use an additional e-mail app.

authors: ซักวัน ฉัน จะดีพอ


text:
Battery draining faster after recharging on Galaxy S4 Mini
I'm struggling with my Samsung Galaxy S4 Mini. Actually the battery is very good and since I don't use my phone a lot, it lasts pretty much 2 days when I let it die and full recharge it.
The issue is, everytime I recharge it when the battery is not dead, the battery is draining very fast even though I don't use my phone.

As you can see, after I unplugged it, even though everything was off, the curve is plunging whereas when everything was off before the plug, it's almost horizontal.
Does anyone have an idea how can I fix it?

Well, let us try running a check over this one: Try removing the battery from the device and then put it over the flat surface, and try spinning if the battery spins freely then battery may be swollen and needs replacement.

I've just tried, so far the battery looks flat and makes only one turn after spinning it. Since the battery lasts long the first time, i would bet on a software problem, no ?

Okay, @sebcarotte that looks like the problem isn't with the battery as only one spinning can be considered as non spinning at all ! I would say why don't you try recalibrating battery.

Thanks Peter, By recalibrating, you mean, full recharge the battery and let it go to 0% once or twice in a row?

Yes @Sebcarotte I am talking about the same full charge the battery let it ran to 0% and then again full charge the battery and let it ran dry. Sometimes it also helps !

All the best ! I'll be looking forward to hear back from you! :D

Draining a lithium-ion battery to 0 should only be done on occasion. It is not good for li-ion batteries to be drained fully.


text:
Questions regarding ZTE Quartz (Surf + Talk, data transfer between internal-external storage)
I have some questions regarding an Android smartphone, ZTE Quartz (Z797C).

Can you search the internet while talking on this phone?
Can you transfer music, pictures, and games from the internal to the external SD card on these phones?

It is not so much the phone, but more the network that determines if you can be on the internet while talking on the phone.
If your Data Network on your carrier uses the same network that is used for Voice, no. But if you have LTE data, for example, and GSM for voice, yes.
One reason carriers no longer mention if you can do this, like when AT&T and Verizon were going head-to-head, is because most carriers now use different networks for data than they do for voice. This means most carriers are able to do "Surf + Talk" at the same time.
To answer your other question, while typically you should only ask one question, especially if they are as unrelated as this, you can copy files from your internal storage to your external storage.


text:
How to recover completely darkened screen on Moto G (Lollipop) due to setting brightness to zero?
I have Moto G on Lollipop, and I mistakenly set the brightness bar to zero. Now, the screen is completely darkened and I'm not able to see anything.
How to set back the brightness to usable mode without hitting factory reset?

Are you sure you set it this way?  I've never known a phone to go completely black if the bar is set to 0, usually it's just very dim.

yes i slided the brighness bar it went full dim. I have the lock screen, is it making it more darker? if i reboot the phone i can see the bootup animation and when it completes it goes dark. I can hear my ringtone if I get call.

You didn't told us the whole story. Do you have stock ROM or custom ROM? How did you enable the possibility to achieve brightness level to 1 instead of 10?

I had the same problem. For the record: I shone something bright (e.g. a flashlight) on the light sensor, and then I saw the screen and could increase the brightness.

Had same problem.  I believe the adaptive brightness auto adjust it to zero light.
I use another phone flash light and direct it on the the front camera and light sensor. Unlocking with power button awaken my screen with adjusted brightness..
Hope this will help...

worked like magic!!!

bless you rudhra, we already wanted to return the phone :)

Using ADB Tool, you can adjust the device brightness, by following command

adb shell settings put system screen_brightness 200

In order to get more info about what ADB is and other details refer the adb tag-wiki.
To Run below command, you need following:

Computer/Laptop with  with ADB Installed.
Computer/Laptop Should recognize device when connected via USB. Install necessary device driver software to ensure device is detected by system.
Connect device to Computer/Laptop using USB.
Start command line program (like cmd in Windows or bash shell in Linux) and go to location where "adb" executable is placed, and run above mentioned command.

I am getting adb installed will update once i try it. Thanks for your help.

i am getting /system/bin/sh: settings: not found

Looks like i have not enabled usb debugging on my phone :(. The reponse i got was from emulator running on my windows.

You need to test this on device only!! you need to first make sure that your PC/ADB Detects your device via USB.

@AADTechnical maybe you could [edit] your answer and include a short hint on the requirements? Not everyone is familiar with what ADB is. You could link to the adb tag-wiki for details (which also includes hints on its installation for "newcomers"). Thanks!

Not working with android naugat

Try to increase brightness in the same dark condition. Lock the phone using power button. Swipe up. Swipe down twice. Then try to move your finger left to right on the top 30% of your screen. Eventually you will be able to get your screen back. Do it patiently. It works. And be careful till this bug is fixed.

I had to hard reset my phone to fix this problem.


text:
Hangouts is using obscene amounts of background data
248 Mb this last week of background data compared to 41 Mb foreground. Last month was 400/100. How do I go about seeing what's the cause? I don't send/receive many pictures, when I do it's usually a Hangouts message, not MMS, but usually on wifi too. My brother is 441 foreground, 85 background fore comparison, so about opposite. But as frequently as we're on wifi, I wouldn't think it should use that much cellular data.
Anyone have any tips or a way to start investigating what's going on?
Edit: doesn't fix the root cause, but disabling background cellular data usage doesn't stop you from getting notifications through the magic of GCM push notifications.

I just got off chat with Project Fi support.  Here's the workaround they gave me to this bug.

Project Fi Support:  Please follow the below steps.

Open your device's Settings app .
Tap Network & Internet and then Data usage.
Tap Mobile data usage.
To find the app, scroll down.
**Please select Hangouts over there.
To see more details and options, tap the app's name.
Change background mobile data usage.
To restrict background data usage for this app, turn off Background data.

User:  Done. What functionality have I lost by turning off Background
  data?

Project Fi Support:  You have not lost any thing. It will just make sure that the data is not used when you are not using Hangouts.
For reference, you can go through this link: https://support.google.com/fi/answer/2819524?hl=en

User:  So new text messages will still notify me right away when they
  come in?
Project Fi Support:  Yes, you'll be getting the messages if the data
  is on.

It used 1.5GB in less than a day for me a couple of weeks ago, so I've turned off background data for the app. Makes it pretty crippled, but only option. I can't find any answer to this problem anywhere.

Just noticed your comment regarding push, great to know. Initially I uninstalled Hangouts, but yesterday thought I'd try again and the last hour 250MB disappeared, do I turned off background data instead of deleting the app again. I also turned off the feedback option, which obviously didn't help.


text:
Attach webcam to android tablet, is it possible?
I have a Logitec C120 webcam (its wire is an USB).
I also have an ASUS transformer infinity (which has an USB port).
Guess what I tried... but the asus does not seem to respond to the webcam in any way.
... can it be made to work?

You may wish to refer to http://android.stackexchange.com/questions/35706/connecting-multiple-usb-devices-using-a-usb-hub-that-connect-to-the-usb-port-of


text:
Would it be possible to use the SD card as the root filesystem
This may sound stupid to someone who knows more about Android, but I don't and it it has been bugging me for some time now.
Since Android is at its core a Linux system, shouldn't it be possible to directly boot from a different storage device (like the SD card) the same way I can boot my computer from a thumbdrive?
This would (in theory) enable the to use a (big) SD card as system memory instead of the (in my case, which is a Wildfire S) ridiculously small real system memory.
So, is this possible?
If yes: How? And are there links/howtos?
If no: Why? Which meachanisms prevent that from happening? Or has just nobody tried to do it?

The Nook Color/Tablet can both do this, and I've seen other Linux distros (Debian, Ubuntu) boot from the SD card on the Xoom. Don't know if anyone's ever tried it on the Wildfire S, although you could look into something like Boot Manager. I'm not sure if there's a device-agnostic solution other than that (which is a little finicky).

The boot.img that is responsible for booting up Android, has their init scripts embedded in the RAM Disk of the actual boot.img which mounts the partitions into the respective /data, /cache, /system mount points respectively.
By altering the init scripts to hit on the SDCard, could lead to an unstable system, furthermore, reducing the life of the SDCard via wear and tear of the SDCard - why?
The kernel when booting, is loading from the / which is within the same partition as the boot partition - hence the need for the RAM Disk to be present along with it. It is that, which gets loaded into memory - a temporary file-system, in order for the init scripts to be read in and executed. Once the mount points are established, then the RAM Disk gets removed and thereby, the temporary file-system a lá RAM Disk, gets "flipped" over to the real partitions at a later stage during the bootstrap.
This is where the RAM Disk comes in - only temporarily, it is through that, the whole process of booting can happen.
The chicken and egg is this - the kernel prior to boot, has no idea what partitions are there!
Not alone that, by hard-coding the SDCard into the kernel's init parameter, which is a specific option that can be passed into the kernel upon boot in which it alters the kernel's processing of the environment.
The wear and tear of the SDCard would be significantly increased, not alone that, the entire Android ecosystem would drastically change, the API's have defined internal storage and external storage - so it could lead to confusion in where to store their own content providers for contacts etc, "Are we sitting on a external storage or internal storage?" from the perspective of Android itself, bear in mind, the content providers itself are housed in internal storage and from an overall picture, its one of de-facto standard convention for Android's file-systems involved.
So to sum up, I do not think that's possible, not ruling out its impossible either but if it can be done, chances are it will be tied intimately to the handset itself, give or take, what manufacturers put in there from a perspective of partition format types (yaffs, emmc, LinusStoreIII, and more importantly, the SDCard handling mechanism from the kernel/hardware viewpoint will be different - am talking about different IO addresses here) and not alone that, differing sizes of the partitions also, this would make the whole concept of Android - not exactly portable either due to non-standard scripts found within the RAM Disk itself.


text:
"Check Your Connection And Try Again" repeated toasts
For about a month and a half my Nexus 6P (running Android Marshmallow 6.0.1) has at random times shown a toast of "Check your connection and try again". This toast shows up no matter what app I am in, maybe two or three times a day, usually; so far today, however, my phone has given me this toast maybe 15 times.
When it shows up, I am usually actually connected to WiFi or Cellular (the issue has occurred on multiple wifi networks and multiple carriers), and loading a webpage immediately before/after it pops up invariably works. Here's what the toast looks like:

When it happens more The issue occurs more frequently (but not at all exclusively) when:

I'm downloading/updating an app from the Play Store
Uploading a photo from my device to Google Photos
I've just restarted my phone
I've just awakened my phone from sleep
My phone turns on after having been turned off with the Google App in the foreground (i.e. when the Google App is on the screen when the phone turns on)

Not actually a duplicate This question may appear to have been asked before, but those questions are about when the toast shows up in the Play Store app; I have nonetheless followed answers' instructions from those questions (instructions like clearing Play Store cache), but to no avail.
These toasts are annoying and I'd like to determine the source. Could it be an app? The Play Store? Google Photos? Or a system prompt?
What I've tried so far

Restarting phone
Switching WiFi networks, switching to Cellular
Clearing Play Store cache
Toggling Hotspot/Tethering on/off
Toggling Airplane Mode on/off

Phone Specs
Nexus 6P, Android 6.0.1, not rooted, has Project Fi as carrier (used to be on AT&T, issue occurred then too)
Edit: One other solution to a similar question mentions the Freedom app, but I don't have that installed.

@beeshyams My phone time is already set automatically and besides that question isn't really my problem: I actually can download apps and open the play store does not give me that error.

@beeshyams Thank you very much for that app idea, I had no clue it existed...and Toaster believes it's the NYTVR app (why would that be the one??). I'll try uninstalling it and seeing what happens.

@beeshyams Problem solved. Thank you very much for your help.

@beeshyams Accepted, sorry for delay :D.

I've also had this problem with repeated toast messages, and interestingly, I also had the New York Times VR app installed. I've uninstalled it now, and I'll update later if this solves the problem.

Based on your assertion that your issue is not Play Store-related, I believe it is a malfunctioning app.
The Toaster app will help you track down the source of these "toast " notifications.
The app description reads:

Records every toast message including the sender package. May be helpful if you get messages and don't know which app sends it.

Update: As confirmed by OP, the Toaster app worked and the app responsible for the repeated notifications (as determined by Toaster) is NYTVR, the VR app of New York Times. Interestingly, there is one  user review there which complains of the same problem faced by you!
Update 2: I tried downloading the NYTVR app to see if the same problem would arise (I am also on same OS, though I have a Moto X Play); however, I did not encounter any such notifications, which makes me think that this may not be purely OS-related, but rather a general bug in the NYTVR app that only occurs on certain devices.

If Toaster indicates that a certain app is sending the notification, make sure that app is updated and has settings set in a standard way. If you can't stop the notifications, contact the developer of the app or uninstall it.
Hope this helps!

Thank you very much for your help, I don't think I would have ever solved it alone...

 Had this issue on my nexus 6 too and tried all the things just like you
As far as i know this happens due to some data fetch that keeps running in the background which is unable to complete and following the android guidelines pops the toast message Check your connection and try again.
As far as i could find this happens due to a bad config during the update or some error during the data fetch.
What worked for me : Flash the stock images again using Fastboot
Now that you're not rooted and prefer using  stock, I suggest that you flash the N Beta which has all the updated frameworks.
Good Luck!

Sorry, thank you very much for your answer but it wasn't the answer that helped me (see beeshyams's answer).


text:
How does my tablet know when I open the cover?
I've recently bought a magnetic cover for my tablet (a bamboo smart cover for Asus Transformer Pad TF303CL). What puzzles me is that whenever I open the cover, the screen turns on. How does the tablet know when I open the cover?
The cover isn't connected in any way to the tablet, AFAIK. The only way that I could think of is if the tablet is using the light sensor, but then why doesn't it turn on the screen when I use my finger to cover the sensor? Or when I turn the light off and then on again?

Also, related: http://android.stackexchange.com/questions/64721/how-does-samsung-s-view-flip-cover-work

@AndrewT. The questions are related but not exact duplicates. Before reading the answer I didn't know the tablet had a magnetic sensor (or other kind of sensors) at all, while that question is all about how that sensor work (given that it exists).

No worries, it is just for a general pointer for devices that support this. I don't know if there are other method, but most of them are using magnet, albeit might have different position on each model.

Your device will have a little magnetic sensor hidden under the display that can trigger the display to turn on.
A small magnet lies embedded directly under the surface of the smart cover and lines up with the corresponding spot on the device. The device detects the removal of this magnet when opening the cover and turns the screen on, and can also put the device into sleep mode when the cover closes.


text:
S Note is disabled on Samsung Galaxy Note 2
I have a Samsung Galaxy Note 2 (GT-N7100) with Android 4.4.2 (updated). S Note app is good for taking notes, but when I remove the S Pen, this app is not running.
Also, I can not find the app in the Menu. I go to the application manager but see that the program is disabled and can't run it again.

How can I re-enable it?

when I remove the S Pen, this app is not running.

Download the latest version of S-Pen And S-Note, then install. And check the results.
Or you can try a factory reset.


text:
How to convert Viber's voice message files to common audio file?
Viber's voice message files are located in /sdcard/viber/media/.ptt/ directory, and they don't have any extension format on them. I'm looking for a solution to convert them to a common audio file format.

Community bump prevention: this question was closed because the question seems to have been abandoned (OP hasn't visited the site anymore for more than 5 years, and existing answers have no votes). If anyone can evaluate the existing answers, feel free to vote accordingly and reopen the question (or mod-flag the question requesting for reopening). For anyone else having the same issue, please post a new question and refer to this question as additional context.

I suppose you have voice tags on your phone or tablet. They are in the folder sdcard/Viber/media/PTT. They are designated by numbers 1, 2, ... without the extension.

First you need to install Viber on your computer.
Install Audacity on the PC as well.
Run Viber on the PC and let somebody send a short voice message to you. If this is the first voice message after installation, it will be labeled "1" and will be in the \users\%username%\documents\viberdownloads\ppt.
Delete this message and replace it with a sound file from your tablet or computer. (I send the file by email from tablet to PC). Be careful that the file had to be the same name as deleted file and had no extension.
Start Viber and test play a sound file.
Run Audacity. Select the correct input source (at the microphone icon) - in my case SoundMaxDigitalAudio-stereo mixer. Enable recording.
In Viber, play voice recording and let the whole recording play.
In Audacity, stop recording and save the recording as a "file in another format", e.g. mp3.

Further reading: How to Save Voice Messages that you Received on Viber (archived)

In Memory/Android/data/com.viber.voip/files/.ptt, you'll find all the *.m4a audio files.


text:
Root a Samsung Galaxy 4 tab 7", Kies isn't working
I am trying to root a Samsung Galaxy 4 tab 7". The box says SM-T230NU with the label "Model: SM-T230NYKMXAR".
I got drivers from here:
http://www.samsung.com/us/support/owners/product/SM-T230NYKUXAR
which is a slightly different number (has a U instead of M) but matches (ie. Samsung Galaxy Tab® 4 7.0 8GB, Black). I installed these and the device connected to the PC with no problems.
Using Odin 3.07, it detects the device. I click the PDA button and select CF-Auto_Root.tar, then Start and I get this error:
<ID:0/005> Firmware update start..
<ID:0/005> recovery.img
<ID:0/005> NAND Write Start!!
<ID:0/005> cache.img.ext4
<ID:0/005> FAIL!
<OSM> All now when I restart I get this message:

Now when I restart I get this message:
Firmware upgrade encountered an issue.
Please select recovery mode in Kies & try again.threads completed. (succeed 0 / failed 1)

I downloaded and installed Kies 3. When I run it, it says "The connected device is not supported by Kies 3". It should be, this is 4.4 KitKat.
So I tried Kies 2.6, and it doesn't connect either. It doesn't give this error message, just keeps trying to connect but doesn't.
What can I do now?

Which CF-AutoRoot did you use? There's no official AutoRoot for that device on Chainfire's website. Also, did you unlock the bootloader first?

I used the CF-Auto-Root.tar that came in the Odin zip file. I don't know what you mean by 'unlock the bootloader'. I put the device in developer mode and checked USB debugging. Is that it?

Where did you get the zip from? Was it specifically for T230? Unlocked bootloader is a different thing and it's needed for CF-AutoRoot if used via Odin. See the XDA Wiki for more info on bootloaders. It seems like CF-AutoRoot attempted to flash your cache but failed, and you'll need to flash back to stock before trying anything new.

flash back to stock before trying anything new ... how do I do this?

Flash your stock ROM using Odin whilst your device is in
Download mode  Power  +  Volume Down  +  Home
(Put the file in the AP/PDA depending on what version of Odin you have). If this works then your tablet may be back to factory state, but if it fails then you have Hard bricked your tablet. Presuming it isnt bricked, use the latest .apk file of King Root to root your Sm-T230.
Stock Rom Download from XDA forums: ACHERON ROM v2.1.1 and
Odin 3 download

Yes king root does worked for me (twice) on this device (sm-t230 7'')    Forum link: http://forum.freelatestmovies.org/tab-4/general/root-galaxy-tab-4-7-t230-t2835264/page41

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