Mine was also fine for a week playing games etc. then for the first time I had it in car seat for 1.5hr drive with navigation in the late afternoon. ever since then I've had touch issues. and never specifically tried to look for the issue I just noticed I couldn't type.
so did you ever have it in car or hot car?
Sent from my Nexus 7 using Android Central Forums
I have this cup holder in my car - Satechi SCH-121 Cup Holder Mount.
The screen became unresponsive (not completely, but enough to cause an accident while driving) in the car while installed in this mount.
I thought I had squeezed the screen edges too tight with the holder, but it still did it when the grips were released, but still sitting on the soft circle pad.
I went home thinking I had broken it, but it worked fine when I tried it at home. (What a relief!)
I tried it again that night, but without clamping the sides.
There is a plastic sheet that covers the soft circle pad to cover some adhesive.
I removed it to 'stick' the pad down so it wouldn't slide out of the unclamped cradle.
It worked just fine.
So I don't know if it was a grounding issue, a clamping the side issue, or a using it in the sun and heat issue.
I'll do some more experiments and maybe make some videos so I can update everyone about it.