Why has Face ID stopped working?
Why does my iPhone Face ID fail?
How do I fix Face ID not available?
Why has my Face ID stopped working on iPhone 11?
Why won’t my phone Let me set up Face ID?
Your iPhone’s Face ID isn’t going to work if it isn’t set up properly – or if it doesn’t have the feature at all. To check your Face ID settings, go to Settings > Face ID & Passcode and, if prompted, enter in your passcode. If you don’t see this option, your iPhone doesn’t have Face ID.