You might need to enter your passcode or Apple ID instead of using Touch ID for one of these reasons:
- If you've just restarted your device
- If your fingerprint isn't recognized five times in a row
- If you haven't unlocked your device in more than 48 hours
- If you've just enrolled or deleted fingerprints
- If you're trying to open Touch ID & Passcode in the Settings menu
If you still need help, follow these steps. Try using Touch ID after each step:
- Make sure that you have the latest version of iOS.
- Make sure that your fingers and the Home button are clean and dry.1 For the Home button, use a clean, lint-free cloth to wipe off any dirt or debris.
- Your finger should cover the Home button completely, touching the surrounding metal ring. While Touch ID is scanning, you shouldn't tap too quickly or move your finger around.
- If you're using a case or screen protector, make sure it doesn't cover the Home button or the surrounding ring.
- Go to Settings > Touch ID & Passcode and make sure that iPhone Unlock or iTunes & App Store is on, and that you've enrolled one or more fingerprints.
- Try enrolling a different finger.
- If you can't enroll any of your fingers, take your device to an Apple Retail Store or Apple Authorized Service Provider, or contact Apple Support.
1 Moisture, lotions, sweat, oils, cuts, or dry skin might affect fingerprint recognition. Certain activities can also temporarily affect fingerprint recognition, including exercising, showering, swimming, cooking, or other conditions or changes that affect your fingerprint.