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Help, please, solve the problem with the work of a fingerprint. When I try to register a new fingerprint, I get the error "Failed to register a fingerprint. Delete unnecessary data from the internal drive and try again", but the memory of my smartphone is clean.
Try as follows
Goto settings-apps & notifications-app info- tap 3 doors upper right corner-tap show system-find fingerprint-tap on it-tap on storage
Then clear cache and data.
Restart device
Set up your fingerprint scanner
O, a clean fingerprint scanner works better too.
PS report back if this worked for you.