I am using a21s mobile from October 2020 .it's work normally but before 3 months after software update my device fingerprint sensor was not working 😕 so bad 😫 and service center is so far so I am sooooooooo sad😔😔
Bro my device works fine. For solving issu can you try restart your phone in safe mode then try to unlock your phone. If this doesn't help you then might be your finger print sensor damage.
We would request you to register your concern in Samsung Members Application. So, that our concern team gets back to you as soon as possible.
Please follow this path to register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
Note. please attach the error log file within 15 minutes of the error occurred.
