On this iPhone 7 we’ve repaired broken data line on a second layer of the logic board after the customer tried to replace the LCD screen and accidentally used the wrong screw on the wrong screw hole and after that, because the screw was long it damaged the logic board and broke the touchscreen connectivity data line between CPU to LCD connector and because of that touchscreen wasn’t working at all. so we fixed the broken data line and touch screen starts working again.
Repairing iPad Mini 2 Retina with Display Issue After Long Screw Damage
Repairing iPhone 6 No Display After Screen Replacement (Long Screw Damage Trace Repair)
Classic iPhone 5s Long Screw Damage Trace Repair to Solve Blue Screen of Death .
Repairing a Long Screw Damaged on iPhone 6 after failed attempt by Another Technician .