Face ID not working on my iPhone
How to fix Face ID
[Re-Titled by Moderator]
iPhone XR, iOS 14
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If you just have issues with Face ID not working properly, read this document:
'If Face ID isn't working on your iPhone or iPad Pro', click here --> https://support.apple.com/HT208114
If an alert says Face ID has been disabled on your iPhone or iPad Pro, this document deals with that specific issue:
"If an alert says Face ID has been disabled on your iPhone or iPad Pro", click here --> https://support.apple.com/HT208186