iOS 15.4 lets you unlock your iPhone's Face ID even when wearing a mask — here's how to set it up

To set up Face ID with your mask, update to iOS 15.4, then head to the Settings app and tap "Face ID & Passcode." ...

How to set up Face ID on your iPhone to increase the security of your device and data

You can set up Face ID on an iPhone in just a few seconds in the "Face ID & Passcode" section of your phone's Settings app.
CNET

iPhone Face ID Not Working? Try Fixing It With These Steps

There are few things more frustrating than trying to unlock your iPhone or pay with Apple Pay only to have your phone ask for your passcode instead. Luckily, if Face ID isn't working, there are a few ...
SlashGear

Face ID Not Working On Your iPhone? Here Are A Few Fixes To Try

Apple's Face ID is one of those features you don't fully appreciate until it stops working. When it's behaving, it feels effortless; you glance at your iPhone and it's instantly unlocked. But when ...