Black screen problems started this morning right after I shut off my alarm and tried to check notifications—my Samsung S21 screen went completely black. Despite this, the phone still works.
I can feel vibrations, restart it, enter my SIM code and phone unlock code, and even use Samsung Dex to back up data. I could also take photos and see them on Dex, but the screen on the phone itself remains black.
What could be causing this? Is the screen dead, or is it a software issue?
@romromillys Have you tried booting it in safe mode? If it works properly while booted in safe mode, you know it is 3rd party software causing the issue.
This guide does show you how to perform a factory data reset on a Galaxy phone. Before you do the reset, know that ALL of your data will be completely erased.
