Face ID on the iPhone X is a collection of parts working together: the front camera, flood illuminator, dot projector, and the proximity sensor all sit on one flex assembly. After a drop, any one of them can fail — and not all of them are field-repairable.
Symptoms and what they mean
| Customer report | Likely failed part | Repairable in shop? |
|---|---|---|
| "Move iPhone a little lower" message | Front camera / flex connector | Yes — reseat or replace flex |
| Face ID setup spins forever | Dot projector | Sometimes — depends on flex damage |
| Screen stays black during calls | Proximity sensor | Yes — replace front sensor flex |
| Face ID option greyed out | Logic board pairing data lost | No — board-level / Apple |
Always check the flex connector first
About one in four post-drop Face ID tickets is just an unseated connector. Open the display, disconnect the battery, reseat the front sensor flex, and test before ordering any parts. It is the fastest diagnostic win in the book.
What to order
If reseating does not fix it, replace the complete front sensor flex assembly from the flex cable collection. Make sure the replacement is paired-compatible with the iPhone X logic board; original-spec assemblies preserve Face ID function in most cases. The full iPhone X parts range covers the other components damaged in the same drop.
FAQ
Will replacing the screen break Face ID? Not if the front sensor flex is transferred carefully. The risk is tearing the flex during removal.
Can Face ID be reprogrammed? No. The pairing between the dot projector and logic board is locked at the factory. If the pairing data is lost, only Apple can restore it.