To unlock the phone

If you don’t use the phone for a while, the screen and backlight will turn off to conserve battery power. To unlock the phone’s default Lock screen:

NOTE

The default Lock screen simply locks the screen to prevent unintentional actions. For more security to guard against unauthorized use, you can set an unlock requirement (such as a Knock Code, pattern, PIN, password, or fingerprint) that will need to be entered to unlock it.

Turn the screen on.
- Press the Power/Lock button (on the back of the phone).
  
  NOTE
  Avoid covering the proximity sensor when turning the screen on. Doing so, immediately turns the screen off.
  
  OR
- Quickly double-tap the center of the screen (KnockON).
From the center of the screen, swipe in any direction to unlock it.
- To use a shortcut, swipe upward across the shortcut icon (at the bottom of the screen). The screen will unlock and launch the app.
NOTE
You can set the shortcut apps you want in the Lock screen settings.