Set up face unlock if you want to unlock
HTC Butterfly using the front camera.
Go to Settings, and then tap
Set it up and follow the onscreen instructions.
Choose a backup unlock method to use in case the phone doesn't recognize you.
Lock phone after, and then specify the idle time before the screen is locked.
To help make face unlock more reliable and more secure, you can:
Improve face matching to train
HTC Butterfly to recognize your face in different situations, such as when you're wearing glasses or sporting a beard.
- Select the
Liveness check option and you will be asked to blink to unlock the screen.