Chosen Solution
I recently got a few phones to fix from a friend, and one is an iPhone 5s. I had taken the screen off to look at what was inside and fiddle around with stuff, and I put it back on but when I turned it on, it would show an Apple Logo, the screen would flash red and it would turn off. In a loop. Occasionally, it would just stop and be stuck on the Apple Logo and I let it run it’s course and it shut off. I took the screen off again to attach a clip that it was missing, and after I put the screen back on, and turned it on, it showed the Apple Logo (no red) but if I applied pressure to the screen the display would either turn off, or white and black lines would appear. When I pressed hard on the screen and I think even the home button, it would show the Apple Logo normally. The screen was a bit loose, I’m not sure if that’s why, but how could I fix this? And prevent my iPhone 5s from having a similar, if not the same issue?
The Red Screen of Death can be caused by a few things: Start by disconnecting the Front Camera Flex (which includes the proximity sensor) and see if your phone boots properly. Follow this guide and don’t forget to disconnect the battery first.It can also be caused by putting the wrong screws in the wrong holes of the screen assembly retaining bracket. This is known as Long Screw Damage. Each screw has a different length and if you place them incorrectly, you can damage the logic board. Take a close look inside the screw standoffs to see if you see similar damage. This would require a micro-soldering repair.
