I'm not saying this 100% works, but its been awhile since my phone has given me any problems with touchscreen, but go into the app store and search "touchscreen calibration" and calibrate your screens.
It should fix it, I think it's just off calibration, like the battery issue.
However I dont know if im lucky or what.
It happens about 6 or 7 times a day for me, but hasnt happened to me since i did the calibration. Might be a fix for it.
Also, has anyone noticed the tethering only gives us an option for USB now? why is that?
Data seems a little better, but also a little worse. I find myself without service sometimes, im still on the IPv6 Tmobile APN though. If thats why please let me know! Im too scared to change any other APN.