The KnockON feature allows you to double-tap the screen to easily turn the screen on or off.
Quickly double-tap the center of the dark screen to turn on the backlight and display the Lock screen.
Quickly double-tap the Status Bar, an empty area on the Home screen, or the Lock screen to turn the screen off.
The backlight will not turn on if the proximity sensor is covered.
When the screen is off and you double-tap the screen with Knock Code activated, the Knock Code grid is displayed for you to enter your Knock Code.