Samsung SM-M136B/DS User Manual page 93

Settings
Unlocking the screen with your fingerprints
You can unlock the screen with your fingerprint instead of using a pattern, PIN, or password.
On the Settings screen, tap Biometrics and security → Fingerprints.
1
Unlock the screen using the preset screen lock method.
2
Tap the Fingerprint unlock switch to activate it.
3
On the locked screen, place your finger on the fingerprint recognition sensor and scan
4
your fingerprint.
Deleting registered fingerprints
You can delete registered fingerprints.
On the Settings screen, tap Biometrics and security → Fingerprints.
1
Unlock the screen using the preset screen lock method.
2
Select a fingerprint to delete and tap Remove.
3
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