How To Fix Fingerprint Recognition Error On Android And iPhone?

To fix fingerprint recognition errors on Android and iPhone devices, follow these concise steps based on the search results:

Android:

1. Clean the fingerprint sensor with a microfiber cloth or a soft, lint-free cloth.
2. Restart your device to clear minor software glitches.
3. Check for and install software updates.
4. Reconfigure your fingerprint: delete existing fingerprints and re-register using the on-screen instructions.
5. Boot in Safe Mode (if applicable) to determine if a third-party app is causing the issue; consider uninstalling recently added apps if the sensor works in Safe Mode.
6. Perform a Factory Reset as a last resort, but ensure you back up your data first.
7. If the issue persists, take your device to an authorized service center.

iPhone/iOS:

1. Clean the Touch ID sensor and your fingers using a clean, lint-free cloth; ensure the sensor is dry.
2. Update your iPhone or iPad to the latest version of iOS or iPadOS.
3. Make sure your fingers cover the Touch ID sensor completely and touch the surrounding metal ring.
4. Use a case or screen protector that does not cover the Touch ID sensor or the surrounding ring.
5. Check Settings > Touch ID & Passcode to ensure iPhone Unlock or iTunes & App Store is on and that you've enrolled at least one fingerprint.
6. Try enrolling a different finger.
7. If issues persist, take your device to an Apple Retail Store or Apple Authorized Service Provider, or contact Apple Support.

Remember that physical damage to the fingerprint hardware might require professional repair, and in some rare cases, factory reset might be necessary (with backup preparation to avoid data loss).