I didn't know we could use these on mobile and gave it a shot. averaged 50 wpm typing with thumbs on mobile and average 110 wpm touch typing on keyboard. I used to hit 140+ easily in high-school, I would like to thank my time in runescape for that, and I have made it a personal goal to get back to that. I sit down for 20 mins a day as often as I remember and just practice, went from 80 wpm to 110 in a couple of weeks. It just takes practice, some deliberate some not so much (typing quickly in game between rounds or when something spicy is happening).