What is is the solution to my Face ID
how can I use my Face ID
iPhone XS, iOS 16
If you are experiencing difficulties with FaceID, depending upon the nature of the problem, you will either need to reset FaceID on your iPhone/iPad, or seek repair.
Start here:
If an alert says Face ID has been disabled on your iPhone or iPad Pro - Apple Support
Assuming that your issue is not hardware related, you can reset FaceID from device settings:
Settings > FaceID & Passcode > Reset FaceID
The reset will require you to re-register your appearance.
Should you have a hardware issue, you would be best advised to visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to test and assess your iPhone/iPad. If repair is required, you’ll be in the best possible place to explore your available options:
Genius Bar Reservation and Apple Support Options - Apple