So im having this problem with both of my phone, when i start the game the touch screen doesn't work until i lock and unlock my screen, Don't Know what to do its pretty annoying
This looks like a issue with this device (perhaps on your other phone too how unlucky if so) unless it's just with this app, then it might just be a case of doing something as such: https://c.mi.com/thread-2072791-1-0.html