1) Install the latest Software Updates: Settings > Update > Download > Install. Follow on screen instructions.
Set up and use the fingerprint sensor on your Galaxy phone.
1) Navigate to Settings, tap Biometrics and security, and then tap Fingerprints.
2) Enter your lock screen credentials. If you do not have a screen lock set up, you may be prompted to create one at this point. When you're ready, read the information, and then tap Continue.
3) Use the on-screen prompts to register your fingerprint. When registering your fingerprint, make sure to fully cover the fingerprint sensor with your finger to prevent strong light from entering the fingerprint sensor. When you're finished, tap Done.
4) Next, make sure that the switch next to Fingerprint unlock is turned on.
Note: If the fingerprint sensor on your device is located on the Side key or below the Side key, you can disable the "Fingerprint always on" option to prevent accidental unlocks.
5) To unlock your phone using your finger, tap the screen or press the Power key or Side key. Then, place the registered finger on the fingerprint scanner, wherever it's located. The phone will automatically unlock if it recognizes your fingerprint.
Keep in mind that when your phone has restarted or if your phone has not been used for more than 24 hours, you’ll need to use your PIN, password, or pattern instead of your fingerprint.
Note: Some phones may come with a pre-installed plastic screen protector designed to work with the in-screen sensor. Installing another screen protector may affect fingerprint recognition.
Try this; Power off your phone Hold the volume down and the power button at the same time until you see the samsung logo You are now in recovery mode Select wipe cache partition Select repair apps It will reboot to repair apps Hope that your issue will be fixed.
