What resetting facial recognition means and when you need to do it

Resetting facial recognition on your iPhone means deleting all the facial data that Face ID has learned about your face and starting fresh. Your iPhone stores this data locally on the device itself — not on Apple's servers — so resetting it removes everything and forces Face ID to relearn your face from scratch.

You might reset Face ID if someone else has been unlocking your phone with their face, if Face ID has become unreliable after an injury or surgery, if you've changed your appearance significantly, or if you're concerned about the accuracy of the data stored. Resetting is also useful if Face ID stops working altogether and you want to rule out corrupted facial data as the cause.

The reset process itself takes about a minute, and then retraining Face ID takes another minute or two. You'll need to set it up again immediately after, so have your passcode ready.

Key Takeaways

  • You reset Face ID by going to Settings > Face ID & Passcode, entering your passcode, and tapping "Reset Face ID" at the bottom of the screen.
  • After resetting, you must set up Face ID again right away by tapping "Set Up Face ID" and following the on-screen prompts to scan your face twice.
  • Face ID data is stored only on your iPhone and is encrypted — resetting removes it completely from the device.
  • If you forget your passcode, you cannot reset Face ID without erasing your entire iPhone through recovery mode.

How to reset Face ID step by step

Open the Settings app on your iPhone and tap Face ID & Passcode. You'll see this option near the top of the Settings menu, usually above "Emergency SOS" or "Passwords". Tap it.

Enter your iPhone passcode when prompted. This is the six-digit (or longer) code you use to unlock your phone. Face ID & Passcode settings require your passcode for security reasons, so you must know it to proceed.

Scroll to the bottom of the Face ID & Passcode screen. You'll see a red button labeled Reset Face ID. Tap it. A confirmation message will appear asking if you're sure — tap Reset again to confirm. Your facial data is now deleted.

Your iPhone will return to the Face ID & Passcode screen. You should now see Set Up Face ID where the reset button was. Tap it immediately to begin retraining Face ID with your face.

Setting up Face ID again after the reset

When you tap "Set Up Face ID," your iPhone will ask you to position your face in the circle shown on the screen. Hold the phone about 10 to 12 inches from your face, centered in the frame. The camera will scan your face — you'll see a circular animation move across the screen.

When the first scan completes, you'll see a message saying "Move your head slowly to complete the circle." Tilt your head in the direction shown — usually side to side and up and down — so the camera can capture your face from different angles. This second scan takes about 15 to 20 seconds.

Once both scans finish, you'll see a "Face ID is now set up" message. Tap Done. Your iPhone will return to the Face ID & Passcode settings screen, and Face ID is ready to use immediately.

What happens if you can't access Face ID settings

If you've forgotten your passcode, you cannot reset Face ID without erasing your iPhone. Face ID & Passcode settings are locked behind your passcode specifically to prevent someone else from resetting your security.

To erase your iPhone and set it up again, you'll need to use recovery mode. Connect your iPhone to a computer with a USB cable, open Finder (on Mac) or iTunes (on Windows), and select your device. Choose "Restore" to erase the phone and reinstall iOS. You can then set up Face ID from scratch during the initial setup process.

If you don't have access to a computer, you can also erase your iPhone by going to Settings > General > Transfer or Reset > Erase All Content and Settings, but this requires either your passcode or your Apple ID password.

Why Face ID might need resetting instead of troubleshooting

Face ID sometimes stops working reliably because the facial data it learned has become corrupted or misaligned, rather than because of a hardware problem. If Face ID is asking you to use your passcode more often than usual, or if it's not recognizing you even when your face is clearly visible and well-lit, resetting can fix this.

Before you reset, try these simpler steps: make sure your face is clean and visible (no sunglasses or heavy makeup that wasn't there when you set it up), ensure the camera lens is clean, and try unlocking in different lighting conditions. If Face ID still fails consistently, resetting is worth trying before you contact Apple Support.

Resetting also helps if you've had facial surgery, significant weight loss or gain, or a major change in appearance. Face ID can adapt to gradual changes over time, but a sudden change sometimes confuses it enough that a fresh scan works better than trying to make the old data work.

Understanding what Face ID data actually is

Face ID creates a mathematical map of your face — not a photograph. Your iPhone measures the distance between your eyes, the shape of your nose, the contour of your jaw, and dozens of other points. This data is encrypted and stored only on your device's secure enclave, a separate chip that keeps it isolated from the rest of your phone's storage.

When you reset Face ID, this entire mathematical map is deleted. Apple cannot access it, and neither can anyone else without physically taking apart your phone. This is why resetting is safe — you're not sending your facial data anywhere, and you're not leaving a copy behind.

The encrypted storage also means that if your iPhone is stolen, the thief cannot extract your facial data or use it to unlock another device. Each iPhone's Face ID data is unique to that device.

Frequently Asked Questions

Will resetting Face ID affect my other security settings?

No. Resetting Face ID only removes your facial data. Your passcode, Apple ID password, and any other security settings remain unchanged. You can still unlock your phone with your passcode while you're setting up Face ID again.

Can I reset Face ID without knowing my passcode?

No. You must enter your passcode to access Face ID & Passcode settings. If you've forgotten your passcode, you'll need to erase your iPhone through recovery mode or use Find My iPhone to erase it remotely, then set it up again from scratch.

How long does it take to set up Face ID after resetting?

The actual setup takes about one to two minutes — roughly 30 seconds for the first scan and 15 to 20 seconds for the second. Face ID is ready to use immediately after setup completes, though it may ask for your passcode occasionally during the first few days as it refines its data.

What if Face ID still doesn't work after I reset it?

If resetting doesn't fix the problem, the issue is likely hardware-related — the camera, the infrared sensors, or the secure enclave itself. Contact Apple Support or visit an Apple Store. They can run diagnostics to check if the Face ID hardware is functioning correctly.

Can I set up Face ID for multiple people on the same iPhone?

No. Face ID on iPhone is designed for one person per device. If you want another person to unlock the phone, they would need to use your passcode. Some iPad models support multiple Face ID profiles, but iPhones do not.