Screen Problems
I don’t know what happened with my phone screen. So do I have to change the screen?
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That doesn't look good and shows the signs of a failing Display or the Logic board.
(1) Try and Force Restart your iPhone EXACTLY as shown below and see whether that resolves the issue:
- Press and quickly release Volume UP button
- Press and quickly release Volume DOWN button
- Press and Hold the SIDE button until an Apple logo appears and then release the Side button (Can take up to 20 seconds. (DO NOT release Side Button when invited to Slide Power OFF).
(2) If that does not help your phone might need service ➔ Contact Apple for support and service - Apple Support
Axel F.