My Face ID not working, what can I do to fix the problem. I updated my phone and it’s still saying the same thing.

Remove the current faceID and set up a new one. This worked for me. Hope it works for you as well. Make sure you are not too close to the screen, not wearing a mask and no obstructions. Hope this helps!

If the issue persists, contact Apple Support directly, using this link:--> https://getsupport.apple.com/?caller=kbase&SG=SG003&category_id=SC0999&symptom_id=23303 , or make an appointment and have your device inspected at an Apple Store or AASP (Apple Authorized Service Provider) among this list:--> Apple – Location Selector. After checking it out, they'll give you all the available options.

Regards

Giulio