Chosen Solution
in my iphone4 ,when touch the screen on keypad 789 it is displaying 456 exactly that same row touch is not working any where on the screen. if remove the scrach guard it is working fine. if i attached the screen scarch guard again it is working fine for 5 to 6 day then again problem is comming. please let me know it is the problem with screen or scarch guard.
find another scratch guard… sometimes the are a little to thick and the touchscreen gets unresponsive.. mostly the cheap ones ;-p