Originally Posted by zFr3eak
since one or two months i have some troubles with my touchscreen. Randomly it starts to press something that i didn't touch and when i stop touching the screen, the system touches from alone. mostly opening google now by swiping up the home button. it also types thigns in whatsapp or so. Sometimes when i turn on the phone the touchscreen doesn't respon. all those problems are solved when i turn off the screen for 5 secs and turn it on again. i am running eXistenZ v3, i also tried some aosp 4.3 roms and had the same problem.
Any idea ?
EDIT: because the problem is solved as soon as i turn of the screen and on again i am not sure if it is really a hardware problem, is it ?
I was just about to post with the same issue!
I replaced the screen and back cover on my Xperia Z back in August and it was running issue free for 2 months but after the update last month to 4.2.2 I started having serious issues with touch screen.
Random inputs, no response to touch, looping homescreens and random apps opening and worse.
I am torn between a hardware issue?
As when the USB cable is connected the problem seems to gone so I think there may be a slight voltage leak screwing with the screen?
What is the best way to ensure that it is not a ground/voltage leak issue?
Or because the issue cropped up almost immediately after the last Sony update, is there a chance it could be a software issue?
I am running on Stock 4.2.2 and any advice will be much appreciated