How can I use Face ID on my iPhone?
open face detect
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If you receive an alert that FaceID is disabled on your iPhone or iPad Pro
It can occur that you will receive the following message on your iPhone or iPad Pro : " A problem was detected with the true depth camera, FaceID is disabled"
When you're getting this error message, Make sure that you're iPhone or iPad Pro is running the latest version of iOS or iPadOS. If your device is running the latest iOS or iPadOS and you're still getting this message and FaceID is not working: contact Apple Support to get your device serviced.