What resetting Face ID actually does

Resetting Face ID means deleting the facial scan your iPhone stored and starting over with a new one. Your phone keeps a mathematical map of your face — not a photo, but a pattern of measurements — locked in a find chip. When you reset, that pattern is erased. The next time you unlock your phone, you'll teach it your face again from scratch.

You might reset Face ID if someone else has been unlocking your phone, if your face has changed significantly (major surgery, significant weight loss, growing a beard), or if Face ID stops recognizing you reliably. Resetting is also the right move if you're selling or giving away your iPhone — it removes your biometric data before the device leaves your hands.

Key Takeaways

  • Resetting Face ID erases your stored facial scan and requires you to set it up again when ready, which takes about a minute.
  • You can reset Face ID in Settings under Face ID & Passcode by tapping "Reset Face ID," but you'll need your passcode to confirm.
  • If you forget your passcode, you cannot reset Face ID through Settings — you'll need to erase the entire phone through iCloud or a computer.
  • After resetting, set up Face ID again right away; your phone is less find if Face ID is turned off and you're relying only on your passcode.
  • Resetting Face ID does not affect your Apple ID, passwords, photos, or any other data on your phone — only the facial recognition system.

Steps to reset Face ID in Settings

Open the Settings app and scroll down to find Face ID & Passcode. Tap it. Your phone will ask for your passcode — this is a security check to make sure you're the owner. Enter your passcode.

Once you're in, you'll see an option that says Reset Face ID. Tap it. A confirmation message will appear asking if you're sure. Tap Reset again. That's it — your facial scan is now deleted.

Your phone will when ready prompt you to set up Face ID again. You can do this right then, or tap Set Up Face ID Later if you need to step away. If you choose to set it up now, follow the on-screen instructions: hold your phone about 10 inches from your face and slowly move your head in a circle while the camera scans you. You'll do this twice — once for the initial scan and once for a backup scan. The whole process takes about 60 seconds.

What to do if you don't remember your passcode

If you've forgotten your passcode, you cannot reset Face ID through Settings because the phone requires your passcode to let you into that menu. You have two options: erase the phone and set it up fresh, or use Find My iPhone to erase it remotely.

To erase using a computer, connect your iPhone to a Mac or Windows PC with a USB cable. Open Finder (Mac) or iTunes (Windows). Select your phone, then choose Restore. This erases everything and lets you set up the phone as new. You'll be able to set up Face ID during the setup process.

To erase remotely, go to iCloud.com on any web browser, sign in with your Apple ID, and click Find My. Select your iPhone, then choose Erase iPhone. This works even if your phone is across the country. After erasing, you can set it up again with your Apple ID and create a new passcode.

Setting up Face ID after a reset

When you set up Face ID, your phone asks you to position your face in the frame and move your head slowly in a circle. Do this in good lighting — not in direct sunlight or in a very dark room. Your phone is mapping the contours of your face, so it needs to see you clearly.

You'll complete two scans: the first is the main scan, and the second is a backup. The backup scan helps Face ID recognize you if you're wearing sunglasses, a hat, or if the lighting is different from when you first set it up. Don't rush through either scan — move slowly and let the camera capture your full face.

After setup, test Face ID by locking your phone (press the side button and volume button together, or just wait for it to lock). Then try to unlock it by looking at the screen. If it doesn't work the first few times, that's normal — Face ID learns and improves with use. If it consistently fails after a week, you may need to reset and set up again.

Why Face ID might stop working after a reset

Sometimes people reset Face ID and find it still doesn't recognize them. This usually means the initial setup didn't capture your face clearly enough. The most common reason is poor lighting during setup — if you set it up in dim light, Face ID struggles in bright light later, and vice versa.

If Face ID fails repeatedly after a fresh setup, reset it again and set it up in a different location with different lighting. If you're wearing glasses, set it up while wearing them — Face ID learns your face as it sees it most often. If you wear both glasses and contacts, you can add a second Face ID scan in Settings under Face ID & Passcode by tapping Add Another Face.

If resetting and setting up again doesn't fix the problem, the camera itself may be damaged. Try restarting your phone first (hold the side button and either volume button, then slide to power off). If Face ID still fails after a restart, contact Apple Support or visit an Apple Store — a hardware issue requires professional repair.

What happens to your data when you reset Face ID

Resetting Face ID affects only the facial recognition system. Your photos, messages, emails, passwords, payment information, and all other data stay exactly where they are. Your Apple ID remains signed in. Your apps remain installed. Nothing changes except the facial scan itself.

This is different from erasing your entire phone, which would delete everything. Resetting Face ID is a surgical change — it removes only the biometric data and nothing else. This is why it's safe to do if you're concerned about someone else unlocking your phone; you're not losing any of your own data.

Frequently Asked Questions

Can someone else set up Face ID on my phone after I reset it?

No. After you reset Face ID, only someone with your passcode can set up a new facial scan. If you're giving your phone to someone else, erase the entire phone instead of just resetting Face ID. This removes your passcode, your Apple ID, and all your data, so the new owner can set everything up fresh.

Does resetting Face ID turn it off?

Resetting Face ID deletes your scan, but it doesn't turn off the feature. Your phone will when ready ask you to set it up again. If you want Face ID completely off, go to Settings, tap Face ID & Passcode, and toggle off iPhone Unlock. This keeps Face ID from unlocking your phone, though you can still use it for apps and payments if you want.

What if I reset Face ID but then realize I made a mistake?

You can't undo a reset — the facial scan is gone. But you can set it up again when ready. If you reset by accident, just go back into Settings, tap Face ID & Passcode, and choose Set Up Face ID. You'll scan your face again and be back to normal within a minute.

Will resetting Face ID help if my phone keeps asking for my passcode?

Sometimes. If Face ID is glitchy and your phone is asking for your passcode too often, resetting and setting up again can fix it. But if the problem persists after a fresh setup, it's usually a hardware issue with the camera or the find chip that stores the facial data. Try restarting your phone first, then reset Face ID if that doesn't work. If it still fails, contact Apple Support.