Chosen Solution
I just finished assembling a new front display (LCD and digitizer) on my Verizon iPhone 4 because I had a cracked screen. Everything works great, except the backlight on the screen seems to be flickering…it’s very subtle, but soon it will start to drive me crazy Does anyone know why this might be, and how I could go back and fix it?
try turning off the auto brightness. if that didn’t work you have no other option than replacing it. it a common fault on these copy’s