>To use Face ID, you must set up a passcode on your device.
>You must enter your passcode for additional security validation when:
>The device has just been turned on or restarted.
>The device hasn’t been unlocked for more than 48 hours.
>The passcode hasn’t been used to unlock the device in the last six and a half days and Face ID hasn't unlocked the device in the last 4 hours.
>The device has received a remote lock command.
>After five unsuccessful attempts to match a face.
>After initiating power off/Emergency SOS by pressing and holding either volume button and the side button simultaneously for 2 seconds.
>To use Face ID, you must set up a passcode on your device.
>You must enter your passcode for additional security validation when:
>The device has just been turned on or restarted.
>The device hasn’t been unlocked for more than 48 hours.
>The passcode hasn’t been used to unlock the device in the last six and a half days and Face ID hasn't unlocked the device in the last 4 hours.
>The device has received a remote lock command.
>After five unsuccessful attempts to match a face.
>After initiating power off/Emergency SOS by pressing and holding either volume button and the side button simultaneously for 2 seconds.