Samsung Galaxy A21 User Manual page 108

Settings
4
Place your finger on the fingerprint recognition sensor. After the device detects your
finger, lift it up and place it on the fingerprint recognition sensor again.
Repeat this action until the fingerprint is registered.
5
When you are finished registering your fingerprints, tap Done.
Checking registered fingerprints
You can check whether your fingerprint is registered by placing your finger on the fingerprint
recognition sensor.
1
On the Settings screen, tap Biometrics and security → Fingerprints.
2
Unlock the screen using the preset screen lock method.
3
Tap Check added fingerprints.
4
Place your finger on the fingerprint recognition sensor.
The recognition result will be displayed.
108