Let me add something to this SCREEN SCRAMBLE ISSUE. This happens to me ONLY if I leave the phone plugged in overnight whilte being exposed to heat from my HT Receiver. 2 times I have laid my phone on top of it, exposing it to very warm temperatures, and in the morning the screen is scrambled. My fix? do not leave it exposed to extreme heat for an extended amount of time
(I have it set to not suspend, but only turn off backlight when plugged)