Issue Description
Fingerprint sensor fails to recognize or respond.
Common Causes
- Dirty sensor
- Corrupt fingerprint data
- Software bug
Step-by-Step Solution
Step 1: Clean the Fingerprint Sensor
- Wipe gently with microfiber cloth
Step 2: Remove and Re-Add Fingerprints
- Settings → Security → Fingerprint
- Delete old fingerprints and add new ones
Step 3: Restart Phone
- Clears biometric service glitches
Step 4: Update Android System
- Install pending updates
Explore Further
- Test sensor hardware in diagnostics
Prevention & Best Practices
Avoid using fingerprint with wet fingers.