My iPhone Face ID stopped working

Follow these steps, testing after each step:

• Face ID not working.
• Software Update.
• Turn iPhone on or off.
• Force Restart iPhone.

If that didn’t work, then it could be a hardware issue.

According to Apple:

Using diagnostics available in iOS 14.6 or later, Apple has detected an issue with your TrueDepth camera that might cause it to not function as expected. The TrueDepth camera contains lasers, which might be disabled for safety reasons if the device malfunctions or is damaged. This won't prevent you from using your iPhone or iPad, but until your iPhone or iPad is updated or serviced, you might not be able to use Face ID, Animoji, Memoji, and some other features that use the front camera.

As a result, I recommend service.

Service Checklist:

• iPhone service pricing.
• Check AppleCare Coverage.
• Get your iPhone ready for service.

Click ▶︎ Start a Service Request. ⚛️

Need more help?

• Chat now or call 1-800-APLCARE.
• International Support.

Click ▶︎ Check Repair Status. 🔧

First I would perform a hard reset on the device by using the instructions here:

Force restart iPhone - Apple Support

If it doesn't work after that, try going to Settings > Face ID and Passcode and you could try resetting it. I would also make sure the top of the screen is clean and that a screen protector isn't overlapping the cameras. If that doesn't work you'll need to contact Apple Support either over the phone or visit an Apple Store. It could be that the Face ID / TrueDepth Camera has failed and may need to be replaced. If you call, they can run diagnostics remotely to check the status of the components. Hope this helps!