My iPhone 4 screen started flickering recently and showing a thin black line across the top of the screen whenever using apps. Yesterday the screen started to show bigger blocks of black/brownish lines and then the whole screen just turns black and I will have to press Home button to start it.This happens everytime after the phone has been switched on for a few seconds. So, I can't do anything with it other than taking calls.

Is it the screen just needs to be replaced or other items need repair? How much roughly will this cost me to repair? Anyone encounter similar problems before?

This post has been edited by audy: Oct 25 2014, 08:06 AM