HTC Butterfly 2 - Manual (Page 206)

Hiding the caller from the lock screen
You can prevent the names and photos of incoming callers from appearing on the
lock or security screens.
The caller must be in your private contacts list.
1. Go to Settings, and then tap Security.
2. Under Lock screen, select Incoming phone calls.
Setting a screen lock
Help protect your personal information and help prevent others from using
HTC Butterfly 2 without your permission.
Choose to set a screen lock pattern, numeric PIN, or other means of securing your
phone. You'll be asked to unlock the screen every time HTC Butterfly 2 is turned on or
when it’s idle for a certain period of time.
1. Go to Settings, and then tap Security.
2. Tap Screen lock.
3. Select a screen lock option and set up the screen lock.
4. Tap Lock phone after, then specify the idle time before the screen is locked.
You can also clear Make pattern visible or Make passwords visible if you don’t want
your screen lock to display as you enter it onscreen.
Setting up face unlock
Set up face unlock if you want to unlock HTC Butterfly 2 using the front camera.
1. Go to Settings, and then tap Security.
2. Tap Screen lock > Face Unlock.
3. Tap Set it up and follow the onscreen instructions.
4. Choose a backup unlock method to use in case the phone doesn't recognize
you.
5. Tap 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:
§ Tap Improve face matching to train HTC Butterfly 2 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.
206 Settings and security