Hey, having trouble with Face ID

What was the result when you followed the guidance in the Related Article above your name on this page, that you were reading just before you posted here? If the Related Article doesn't answer your question please post back with more details about the issue and another user in this user-to-user forum will try to help.

But note that if simple troubleshooting as described in the link doesn’t solve it your phone has a hardware problem; there is a place in the link to click for hardware support from Apple.