New iPhone —-cannot activate face id
How to activate Face ID on new iPhone
iPad, iPadOS 14
Question marked as
Top-ranking reply
Settings, Face ID & Passcode
Turn on Face ID and follow the instructions here.
Use Face ID on your iPhone or iPad Pro – Apple Support (UK)
Also see this
If Face ID isn't working on your iPhone or iPad Pro - Apple Support (AZ)
If this is brand new phone and it still does not work (may be your country) then reach out to Apple Support directly.
You should be able to reach them here
Contact - Official Apple Support
or phone numbers
Contact Apple for support and service - Apple Support