How can I fix my Face ID?

No details?

How to use Face ID:

Face ID not working?

Face ID issues that are triggered by a software update usually requires service.

Get expert service and support at the Genius Bar.

• Call Apple Support at 1-800-APLCARE.
• International Support.
• Contact Apple Support.
• Chat using Messages.

See if anything here helps 

Face ID - If an alert says has been disabled on your iPhone or iPad Pro.  *

If Face ID isn't working on your iPhone or iPad Pro  *

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