How to Fix iPhone X Face ID Not Working ‘Move iPhone a Little Lower/Higher’ on Setup
With the diffused application of Face ID on iPhone X – 11 series, Face ID failure also appears at a high frequency. As our previous Face ID teardown video has introduced, Face ID can be easily damaged and hardly repaired. If the problem is related to the flex cable, then it’s simple.
Face ID Sensor Flex Cable Replacement Service: $120 cad
iPhone Doctor Repair Co.
However, based on statistics of chip-level motherboard repair service, Face ID failure is caused by damage of the Flood illuminator/Dot Projector in most cases, which can not be repaired.