Face ID usually stops working because of a simple issue like camera blockage, settings, or software glitches, and you can often fix it yourself.

Quick checks first

Try these fast things before anything complicated:

  1. Clean and uncover the camera
    • Gently wipe the front camera area (the notch / Dynamic Island) with a soft, dry cloth.
 * Make sure your case or screen protector is not covering any part of the sensors.
  1. Check how you’re holding the phone
    • Hold it at “selfie distance” (about 25–50 cm from your face) and in portrait orientation.
 * Look directly at the screen; don’t cover eyes, nose, or mouth with masks, big sunglasses, or hats.
  1. Restart your iPhone or iPad
    • A simple restart often fixes temporary software glitches that break Face ID.

If Face ID starts working again after this, you can stop here.

Check Face ID settings

Sometimes Face ID is fine but turned off for what you’re trying to do.

  • Go to Settings > Face ID & Passcode and enter your passcode.
  • Confirm that Face ID is set up and enabled for:
    • iPhone unlock
    • Apple Pay / Wallet
    • App Store / iTunes
    • Password autofill and other apps.
  • If specific apps can’t use Face ID, go to Settings > Face ID & Passcode > Other apps and enable them.

If it still fails often, try:

  • Set Up an Alternate Appearance (useful if you look very different with glasses, beard, or makeup).

When Face ID is temporarily disabled by design

Apple will force you to enter your passcode instead of using Face ID if:

  • You’ve just restarted the device.
  • The phone hasn’t been unlocked in more than 48 hours.
  • You’ve made 5 unsuccessful Face ID attempts.
  • You’re on the Emergency SOS screen or the device is in Lost Mode.

In those cases, unlock with your passcode once; Face ID should work again afterward.

If it still doesn’t work: reset Face ID

If the camera is clean and settings look right, reset Face ID:

  1. Go to Settings > Face ID & Passcode.
  2. Tap Reset Face ID.
  1. Tap Set Up Face ID and follow the on‑screen circles twice, moving your head slowly.

Test it with a lock screen unlock and an app that uses Face ID.

Signs of a hardware problem

You may be dealing with a hardware issue if:

  • You see messages like “Face ID is not available” or “A problem was detected with the TrueDepth camera. Face ID has been disabled.”
  • The device had a strong drop, water damage, or a badly cracked screen around the front sensors.
  • Cleaning, restarting, updating, and resetting Face ID don’t help at all.

In that case, the fix is usually professional repair of the TrueDepth camera module.

What you can try right now (step list)

  1. Clean the front camera area and remove anything that might block it.
  1. Restart your iPhone/iPad.
  1. Update to the latest iOS in Settings > General > Software Update.
  1. Recheck Settings > Face ID & Passcode and enable needed options.
  1. Reset Face ID and set it up again.
  1. If you still get errors or no improvement, contact Apple Support or a trusted repair center for a hardware check.

If you tell me your device model (e.g., iPhone 13, iPad Pro) and what exactly happens (error message, nothing happens, or always asks for passcode), I can walk you through a more tailored, step‑by‑step fix.