Set up Face ID on iPhone - Apple Support

Use Face ID to unlock iPhone, authorize purchases and payments, and sign in to many third-party apps.

New Apple support documents share useful iPhone X tips

Secure your iPhone or iPad with Face ID - Apple Support (MT)

If Face ID isn't working - Apple Support

If you forgot your iPhone passcode, use your Mac or PC to reset it - Apple Support

iPhone: How to use Face ID with a mask - 9to5Mac

Set up your iPhone or iPad - Apple Support

Wake and unlock iPhone - Apple Support

Apple Face ID not working? Here's how to fix it - Android Authority

How can my face ID work again, 'its say's… - Apple Community

Set up Family Sharing – Apple Support (AU)

Use Face ID - Apple Support (IS)

Use Touch ID on iPhone and iPad - Apple Support