To add another Face ID on iPhone, go to Settings → Face ID & Passcode, enter your passcode, then tap Set Up an Alternate Appearance and follow the on-screen face scan steps. Apple’s Face ID setup flow also supports a second appearance, which is the normal way to add another trusted face on the same iPhone.

Steps

  1. Open Settings.
  2. Tap Face ID & Passcode.
  3. Enter your iPhone passcode.
  4. Tap Set Up an Alternate Appearance.
  5. Center the face in the frame and move slowly so the phone can capture all angles.
  6. Finish the setup and test it by unlocking the phone.

Good to know

  • This feature is meant for a second appearance, not unlimited faces.
  • If you already see Reset Face ID , the phone is already using both available face profiles.
  • You can also adjust related options like Face ID with a Mask from the same menu.

Troubleshooting

  • Use a well-lit area and remove anything blocking the face, like sunglasses or masks, during setup.
  • If the option is missing, your device may already have the alternate appearance set up.

Information gathered from public forums or data available on the internet and portrayed here.