iPhone's Face ID not working since 17.2.1 update

I find it fascinating how, right after there is an OS upgrade--and thousands are experiencing the same problem--Apple will assert that it is something other than the OS upgrade. It's not a freaking hardware issue. It happened the very morning after I was automatically upgraded to iOS 17.5.1.

Now, for those of you experiencing the same thing, I can share that--although the Face ID setup just wouldn't work no matter how many times I tried it and no matter how many times I restarted my phone--it just did now, later in the day, approximately the 8th time I tried it. So I guess: just keep trying.

Setup hangs on face in frame- no advancements from there except “cancel”…

My Face ID stopped working. Foolishly, I decided to reset my Face ID. However, no matter how squarely I put my face in the frame it tells me it’s not there. About the same time my iPad also started crashing at odd times. And now I’m just getting the flashing apple screen. Did the latest update come with a bug?

Follow the guidance in this support article→If Face ID is disabled on your iPhone or iPad Pro - Apple Support. This is frequently a hardware problem; there is a link in the article to contact Apple support if the listed troubleshooting doesn’t solve the problem.

Same problem here. I did a tech support chat (after trying all the online troubleshooting issues) and they did a remote diagnostic test which came up with nothing. I mentioned how it happened right after the last update and they agreed it could be the issue but then suggested bringing it in for service. I did schedule a service appointment but postponed it a couple weeks, thinking it'll fix itself with the next update. Glad it's next week, hopefully it solves it!

It did it almost simultaneously on both my iPhone 15 Pro Max and my iPad Pro after the last update. I restart, reset the Face ID, restarted again and it will work for maybe an hour. The worst part is that you can see this faint Face ID icon that appears on the top camera bar and tell it is stuck in some kind of Face ID thinking loop as it won't easily bring up the passcode prompt until after it decides to give up

If Face ID is not working because of a software bug, restarting your iPhone or iPad may be enough to fix the problem. If nothing works, it's best to reset your Face ID and set it up again. Go to Settings > Face ID and passcode and tap Reset Face ID.

if it’s still not working refer to If Face ID isn’t working on your iPhone or iPad Pro – Apple Support (UK)

See my post above, or I’ll repeat it here:

Follow the guidance in this support article→If Face ID is disabled on your iPhone or iPad Pro - Apple Support. This is frequently a hardware problem; there is a link in the article to contact Apple support if the listed troubleshooting doesn’t solve the problem.

It doesn't surprise me, One software many devices there's a big possibility for things like this to happen more likely to many more people.

Go to apple store or chat with support or call support and let them fix it for you.

Contact - How to Contact Us - Apple

That’s what my phone has been currently doing /:

It’s July 23rd and I woke up and mine doesn’t work. I’ve restarted four times. Nothing works. The new setup won’t progress. Very frustrating.

My wife and I have had iPhones since the 7. We’ve not experienced more frustration with our phones than we have experienced in the last month or so. Facial recognition is simply broken. Resetting it 10 times a day. No help. We are looking at Samsung now for the first time in more than 20 years.

Try thumping the camera location if the phone keeps asking you to lower or raise the phone. I kid you not, thumping the camera (not overly hard) will instantly make it do its job. I found this tip online.

If none of the steps in that article resolve the problem then it is broken. Use the link in the article to contact Apple hardware support.