Chosen Solution
I replaced my brothers iPhone screen for him and after booting the phone back up I noticed strange lines and black bar going down the screen. I have replaced screens lots of times and this has never happened. What is weird is when I press the power button to turn the screen off and turn it back on the screen is fine but when I leave the phone down for a few minutes and turn it back on the screen displays the lines again. I have attached pictures for reference. If anybody has any suggestions or ideas it would be greatly appreciated. Thanks.
That’s usually caused by a defective replacement screen. Try re-installing, or at least connecting, the original screen if it was still functional. If the problem doesn’t appear on the original, then the issue is with the replacement screen.
