Check this link...
If Face ID isn't working on your iPhone or iPad Pro - Apple Support
If that doesn't help, you will need to make an appointment at the nearest Apple Store for a repair...
Check this link...
If Face ID isn't working on your iPhone or iPad Pro - Apple Support
If that doesn't help, you will need to make an appointment at the nearest Apple Store for a repair...
Check this link...
If Face ID isn't working on your iPhone or iPad Pro - Apple Support
If that doesn't help, you will need to make an appointment at the nearest Apple Store for a repair...
A.problem was detected with the TrueDepth camera. Face ID has been disabled.