When I go to turn my 3GS on from being locked, the backlight doesn't always come on. you can still see the icons & etc. it's just very dim and i have to lock it and unlock again for the backlight to turn on. does anyone know about this problem? also, if the backlight is on and I barely tap it on the top left corner the backlight will turn off. can anyone give some info to this. My friends has been not displaying backlight after every few screen unlocks since he got it. mine just started.