I have had a look through the posts here and couldn't seem to find my issue. I have the Galaxy S21 Ultra and just today when I have gone to take a photo, the screen is blank and unresponsive, showing only the buttons down the bottom for the camera, but unresponsive.
I have tried the following:
- Restart the phone
- Clear Camera Cache
- Clear camera data
- Check for updates
- Wiped the cache partition
I exchanged my phone at the department store I purchased it from. John Lewis, UK - they have excellent after sales service, so I tend to buy expensive tech from them.
This solved the issue for me the tech I contacted wasn't able to help so I Googled several resolutions and this one solved mine hopefully it'll solve yours.
Sorry the pic is incorrect- but you simply reset the system settings by going to SETTINGS on your phone.
Go to GENERAL MANAGEMENT scroll down to reset and ok it.
The phone will restart and your phone will be working again.
Apparently it's a bug with the newest update in the software.
Hope this helps you if so, share it.