Face I.D not available 18.7.2
Face id is still not available after the update for 18.7.2 it started when I updated my device on ios 18.7.1 done with factory reset still showing "Face I.D not available try again later" help!!
iPhone XR, iOS 18
In most cases that is a hardware issue with the front facing camera sensors. Schedule an appointment at Apple where they will perform diagnostics to determine what the fault is.
Genius Bar Reservation and Apple Support Options - Apple