How to Resolve Android Fingerprint and Face Unlock Failures

Step by step

1. 1 min

   Clean the biometric sensors

   Power off the device and use a dry, lint-free microfiber cloth to wipe the fingerprint sensor area and the front-facing camera lens. Oils, moisture, or screen protector residue frequently cause recognition failure. Do not use cleaning solvents or compressed air.

   Note: If you use a screen protector, ensure it is certified for use with your specific device model's biometric hardware.
2. 2 min

   Clear the biometric system cache

   Open Settings and navigate to Apps > See all apps. Tap the three-dot menu icon in the top right, select Show system, and locate Biometrics or Com.android.biometrics. Select Storage & cache, then tap Clear cache and Clear storage.

   Note: This action requires you to re-enroll your fingerprints and face data.
3. 3 min

   Verify current system software

   Outdated security patches often disrupt biometric drivers. Navigate to Settings > System > Software update and tap Check for update. Install any available updates and restart the device immediately upon completion.

4. 3 min

   Re-enroll biometric profiles

   Navigate to Settings > Security & privacy > Device unlock. Select Fingerprint unlock or Face unlock and delete all existing profiles. Once cleared, follow the on-screen prompts to register your fingerprint or face under optimal lighting conditions.

   Note: Registering your primary finger twice can improve recognition speed and accuracy.
5. 1 min

   Test in Safe Mode

   Third-party applications may interfere with biometric authentication processes. Hold the Power button, then long-press the Power Off icon on the screen to enter Safe Mode. If biometrics function correctly here, uninstall recently added third-party security or accessibility apps.

   Note: Restart your phone normally to exit Safe Mode.