LCD Refurbishing ends in ghost touch
I have been refurbishing screens from iPhone 6 to 8 Plus for almost 6 months now and I am experiencing a lot of issues with my screens. At least the half of the screens I refurbish get an issue when sitting the screen in the iPhone and close it.
Most of them get dead zones with no touch on the screen or ghost touch, this blow my mind since every time I test nothing of this show, I would like to mention that I test without sitting on the phone, but honestly I have seen no one sit the screen on the phone for testing.
What could be causing this issue? Could it be related to the installation?