Nokia C21 user guide

1. Tap Settings > Security > Fingerprint.
2. Select what backup unlocking method you want to use for the lock screen and follow the instructions shown on your phone.

Place your registered finger on the sensor.

If there is a fingerprint sensor error, and you cannot use alternative sign-in methods to recover or reset the phone in any way, your phone will require service by authorized personnel. Additional charges may apply, and all the personal data on your phone may be deleted. For more info, contact the nearest care point for your phone, or your phone dealer.