Galaxy S21/Ultra/Plus: How to Hard Reset With Hardware Keys - YouTube
How to Factory Reset Hard Reset Samsung Galaxy S21 5G English Instructions - Fastest Way Possible - YouTube
How to do a hard reset on SAMSUNG Galaxy S21? - HardReset.info
How to Hard Reset Samsung Galaxy S21 / S21+ / S21 Ultra 5G - YouTube
S21 Ultra won't unlock, after inputting my PIN the OK button remains greyed out and won't respond. Restarted with power and volume down button but that didn't do anything. Anyone know what
How to Factory Reset a Samsung Galaxy Without the PIN