Face ID not working since IPhone update 16.6.1

I was going down through the responders answers and one caught my eye about cleaning his screen well and it worked. (thanks for that response)! So my screen was kind of dirty but more importantly I had cracked my screen protector. I really didn't think this was an issue because my selfie camera and face time was working just fine. I'm definitely no tech guy but decided to remove the protector and just see. All I can say is there must be some other hardware up in that are for facial recognition because once I removed it has worked flawlessly. This all happened around the time of an update so I was miss-diagnosing the real problem. I don't know if this will help someone but I decided to leave a response where I began.

Lobster - no this is not limited to cc.

on some iPhone models the update does not work with the camera in the phone - you receive a “ Trusense “ error and are not able to set up FaceID in settings - the only fix is to get a new camera installed ($200 and about an hour at an Apple Store ) or buy a new phone

i spent 2 days chasing this down

I resolved this by doing a really good clean of my screen! Although things looked OK to me, there must have been just enough smudges on the screen to mess up Face ID :)

bmac_17 wrote:

I have a 13 Pro Max. Problems started immediately after 16.6 update then got worse with 17 update

Updates rarely if ever cause Face ID to stop working. Hardware issues do however. You should schedule an appointment at your Apple Store Genius Bar (if you haven't had your screen replaced on your iPhone by anyone other than Apple or an Apple Authorized Service Provider) to have your phone evaluated.

I booked a session with a Genius. It turns out that there is some lint or dust wedged into my Face ID camera. To fix it involves replacing the entire face of my phone. Given the age of my phone, it is better to just buy a new one.

Hi Shravan and Lobster - that is actually not correct - its logical but not correct.

During the life of an iphone (or any high voilume consumer electronics, laptops etc), the exact components in the "build" for that product change - component vendors bug fix, cost reduce or otherwise improve / update components they ship to Apple - they are supposed to test them - but of course they cannot test them with an update which has not been written.

In this case there were "True Sense" cameras which were incompatible with this update - at the Genius Bar I was told my "camera had been corrupted " in the update process - which I think is nonsense since I don't believe this camera contains any ROM, but what they trained their reps top tell customers.

I suspect the old camera driver is not compatible with the update. In any case the only fix is to buy a new camera ( $200. ) which I did or purchase a new phone.

My IPhone 11 Pro Face ID is working great with the new camera - no amount of resets etc prior to that corrected the problem.

Try all the suggestions in this support article --> If Face ID isn't working on your iPhone or iPad Pro - Apple Support

*Update. All problem fix after updating to iOS 17 👍🏻

Thank you so much deewatts!!

You fixed my problem!

Who would have thought that shutting down from the settings, general would be different from shutting down from the power button!

If it was the update, it would have happened to everyone who updated. But it didn't happen to everyone. Certainly didn't happen to me, or my spouse, or anyone in my office, or any of my friends phones. It is odd that it happened to coincide with an update, but to suggest it's due to the update, just doesn't make it so.

Either way, since you've tried all the suggestions in the link and nothing worked, then you'll need to schedule an appointment at your Apple Store Genius Bar for evaluation and options. We're just users here, like you, so we can't fix it for you. You need to take it to Apple for assistance.

You can use this link to schedule a Genius Bar appointment --> Genius Bar Reservation and Apple Support Options - Apple

Is it still working?

I tried it as you suggested and it worked for a little while then stopped working.

Last night I shut down the phone all night unplugged. This morning I turned it on and it has been working all morning. 🤷🏻‍♂️

Someone suggested going to the factory resent in settings and doing a shut down from there. I've been dealing with this same exact issue for days, and that reset worked! It finally let me set up Face ID again!

Same issue with my iPhoneX. On the locked screen, it would say Face ID when I try to open it, but it seemed I like it would not even try to scan my face. It would go straight to the enter the passcode screen. The same with my apps, they would go straight to the enter password screen. Within my setting it says, Face ID Issue. I tried resetting my Face ID. When I try to scan in my face again, I get a message saying Face ID Is Not Available. Try again later.