Ok so I have been having this problem for a few days now.
I live in South Carolina, and right now it is hot as hell and very VERY humid.
I work outside for most of the day doing these jeep tours in Myrtle Beach. People are always late so I have to call them, but the past few days I have been unable to.
Basicaly after being outside for about 1-2 hours, my phone is unusable. All because of the touch screen. I can barely unlock the touch screen without the phone spazzying out, moving all over the screen, touching things I didnt touch. ALso barely responding to anything I do on the screen.
What I found is that the screen often goes un-usable after one touch, so I have to turn screen off and on for every single screen press. Very annoying.
Today it was so bad I couldnt even place a phone call.