how to reset face id on iphone

To reset Face ID on an iPhone, follow these steps:

1. Open the Settings app.
2. Scroll down and tap on "Face ID & Passcode."
3. Enter your device passcode to access the settings.
4. Scroll down and tap "Reset Face ID."
5. After resetting, tap "Set up Face ID" and follow the on-screen instructions to scan your face again by positioning your face in front of the camera and moving your head in a circle to capture all angles.

This process will erase the old Face ID data and let you create a new Face ID profile.