Face ID is not available

First start here:

If Face ID isn't working on your iPhone or iPad Pro - Apple Support

If the front facing camera sensors that includes the IR Blaster and True Depth camera is not functioning, then service may be required. Apple can perform diagnostics on your phone for free, or it may be possible to download the Apple Support app where there is a diagnostic section.

Genius Bar Reservation and Apple Support Options - Apple

Thank you for reaching out. 😉

Follow these steps, testing after each step:

• Face ID not working
• Software Update
• Turn iPhone on or off or tell Siri: "Power Off"
• Force Restart iPhone

If that didn’t work, then it could be a hardware issue.

According to Apple:

Using diagnostics available in iOS 14.6 or later, Apple has detected an issue with your TrueDepth camera that might cause it to not function as expected. The TrueDepth camera contains lasers, which might be disabled for safety reasons if the device malfunctions or is damaged. This won't prevent you from using your iPhone or iPad, but until your iPhone or iPad is updated or serviced, you might not be able to use Face ID, Animoji, Memoji, and some other features that use the front camera.

As a result, I recommend service.

Service Checklist:

• iPhone service pricing.
• Check AppleCare Coverage.
• Get your iPhone ready for service.

Click ▶︎ Start a Repair Request.

Need more help?

• United States: 1-800-APLCARE.
• Contact Support.
• iPhone Support.
• iPhone User Guide.

Click ▶︎ Check Repair Status. 🔧

Good luck! 👋🏼😉

Smiliñ 😎 Brian

If Face ID isn't working for you, there is most likely something wrong with your TrueDepth camera. First, look at these two articles for help. If that doesn't fix the issue, then make an appointment at the Genius Bar to have your camera issue diagnosed.

If an alert says Face ID has an issue on your iPhone or iPad Pro - Apple Support

If Face ID isn't working on your iPhone or iPad Pro - Apple Support (AZ)

Make an appointment at the Genius Bar to have it diagnosed.

Genius Bar Reservation and Apple Support Options - Apple

What model iPhone and what iOS version are you using?

Please do a forced restart.

Force restart iPhone - Apple Support