This guide explains how to fix the common issues that one may encounter with the Touch ID
feature of your iPhone.
Touch ID Fails to Recognize Your Fingerprints
If your iPhone won’t recognize your fingerprints, but you still remember your passcode, you can delete the current fingerprints and register them again.
How To Delete Fingerprints on the iPhone
Go to Settings
> Touch ID & Passcode
and enter your passcode when prompted. Select the faulty fingerprint and then tap on Delete Fingerprint
How To Enroll Fingerprints on the iPhone
You can use another finger or enroll the same finger multiple times to improve the accuracy of the Touch ID feature. For more information, please read our article on How To Enroll New Fingerprints with Touch ID
Touch ID is Not Working and You Don’t Remember Your Passcode
If you no longer remember your passcode, you will be left with no choice but to restore your device to factory settings