[Gunflight]

It’s caused by moisture. I have confirmed this on three different sprint touch pros. I noticed it after I had it in my pocket for a long period of time while working. Its basically sweat/ moisture that gets stuck between the screen and the touch sensor. This never happend with my Mogul. I no longer put the phone in my pocket under any circumstances. FYI this is my 8th touch pro from sprint. Wish this thing was built better and HTC spent more time testing the device before release. Still the best WM phone available on sprint.