To set up Face ID on iPhone, go to Settings > Face ID & Passcode > Set Up Face ID, scan your face twice, then choose what Face ID can unlock. The same basic path works on supported iPad Pro models with a TrueDepth camera.

This guide gives you the fast setup steps first. Then it covers Face ID with a mask, alternate appearance, app and payment settings, and the fixes to try when Face ID is not working.

Quick answer: how to set up Face ID on iPhone

Here is the short version if you already know your iPhone supports Face ID:

1. Open Settings.
2. Tap Face ID & Passcode.
3. Enter your passcode.
4. Tap Set Up Face ID.
5. Hold your iPhone in portrait orientation and place your face inside the frame.
6. Move your head slowly to complete the first scan.
7. Tap Continue, repeat the scan, then tap Done.

Apple's own setup guide uses this same path: Settings > Face ID & Passcode > Set Up Face ID. If setup fails, do not keep rescanning blindly. Check the camera, lighting, distance, and device support first.

Before you set up Face ID: compatibility and quick checks

Face ID works on iPhone and iPad models with Apple's TrueDepth camera system. That includes iPhone X and newer models except iPhone SE, plus supported iPad Pro models with Face ID.

Before you start, check 4 things:

• Your device supports Face ID. If you have an iPhone SE or an older iPhone with Touch ID, you cannot add Face ID with software.
• You know the passcode. iPhone asks for it before changing Face ID settings.
• The TrueDepth camera is clear. Remove screen protectors, cases, dust, or anything covering the top camera area.
• Your face is visible. Hold the device upright, keep it 10 to 20 inches from your face, and look at the screen.

Not sure which iPhone you have? Open Settings > General > About and check Model Name. That beats guessing from the camera bump.

How to set up Face ID on iPhone step by step

To set up Face ID on iPhone, start in Settings > Face ID & Passcode. Apple keeps the control there because Face ID handles unlock, payments, password autofill, and app access.

1. Open Settings on your iPhone.
2. Tap Face ID & Passcode.
3. Enter your iPhone passcode.
4. Tap Set Up Face ID.
5. Hold your iPhone in portrait orientation.
6. Put your face inside the on-screen frame.
7. Move your head slowly in a circle until the scan completes.
8. Tap Continue.
9. Complete the second scan.
10. Tap Done.

After setup, lock your iPhone and wake it again. If the lock icon opens when you look at the screen, Face ID works.

How to use Face ID after setup

After you set up Face ID, iPhone can use it for more than unlocking. Open Settings > Face ID & Passcode and look under Use Face ID For.

You can turn Face ID on or off for:

• iPhone Unlock -- unlock the device when you look at it.
• iTunes & App Store -- approve purchases and downloads.
• Wallet & Apple Pay -- confirm payments before you hold the phone near a reader.
• Password Autofill -- fill saved passwords after Face ID checks you.
• Other Apps -- let banking, shopping, password, and messaging apps use Face ID.

Apple's Face ID use guide explains the unlock, purchase, and app approval flow in more detail: Use Face ID on your iPhone or iPad Pro.

If an app does not ask for Face ID, check that app's settings too. Some apps keep their own biometric toggle inside their security or privacy menu.

How to set up Face ID with a mask

To use Face ID with a mask, you need iPhone 12 or newer and iOS 15.4 or later. The feature focuses on the area around your eyes, so Apple limits it to newer Face ID hardware.

Turn it on here:

1. Open Settings.
2. Tap Face ID & Passcode.
3. Enter your passcode.
4. Turn on Face ID with a Mask.
5. Follow the scan prompts.
6. If you wear glasses, use Add Glasses so Face ID can recognize that look too.

Face ID with a mask is useful, but it is stricter. Look directly at the screen and avoid sunglasses. Apple says sunglasses can block the eye-area detail Face ID needs for mask unlock.

How to add an alternate appearance or reset Face ID

Use Set Up an Alternate Appearance when your regular look changes enough to confuse Face ID. This can help if you switch between glasses, facial hair, head coverings, or work gear.

To add one:

1. Go to Settings > Face ID & Passcode.
2. Enter your passcode.
3. Tap Set Up an Alternate Appearance.
4. Complete the scan.

Alternate Appearance is designed for another version of you. It can technically let another person unlock your iPhone, but that gives them access to your device, apps, payments, and saved passwords. Do not treat it like a harmless guest profile.

To reset Face ID, go to Settings > Face ID & Passcode > Reset Face ID. Then run setup again from the start. Resetting helps when Face ID learned a bad scan or keeps failing after a major change in your appearance.

Face ID not working? Try these fixes

If Face ID is not working, start with the boring fixes. They solve more problems than another rushed scan.

• Clean the TrueDepth camera area. Wipe the top of the screen and remove anything blocking the camera.
• Hold the device at a normal distance. Apple recommends about 10 to 20 inches from your face.
• Look at the screen. If Require Attention for Face ID is on, iPhone needs your eyes open and aimed at the display.
• Remove anything covering your face. Masks, scarves, and some sunglasses can stop Face ID unless mask unlock is supported and enabled.
• Restart your iPhone. It is dull advice because it works often enough to earn the spot.
• Update iOS. Go to Settings > General > Software Update.
• Reset Face ID. Use Settings > Face ID & Passcode > Reset Face ID, then set it up again.

If your iPhone says there is a problem with the TrueDepth camera, follow Apple's troubleshooting steps: If Face ID isn't working on your iPhone or iPad Pro. A hardware warning is not a writing-a-better-passcode problem. It may need service.

Is Face ID safer than a passcode?

Face ID is designed for secure unlock and authentication, but your passcode still matters. iPhone uses the passcode as a backup after restart, several failed Face ID attempts, or security-sensitive actions.

For daily use, Face ID helps because you are less likely to type your passcode in public. That reduces shoulder-surfing risk. Still, use a strong passcode. A 6-digit passcode is better than 4 digits, and an alphanumeric passcode is stronger if you can live with the typing.

Face ID also requires attention by default. You can check this under Settings > Face ID & Passcode > Require Attention for Face ID. Keep it on unless you have an accessibility reason to turn it off.

Pros and cons of Face ID

FAQ

Final check

Set up Face ID, test unlock, then test the parts you care about: Apple Pay, App Store purchases, Password Autofill, and app logins. If Face ID keeps failing, reset it once and use Apple's troubleshooting guide before assuming your phone is broken.

For more iPhone quick fixes, Softorino also has guides on how to lock an iPhone screen for kids and turn off the iPhone flashlight. No product pitch here. Face ID is Apple's job.