LG X style L56VL Guia Del Usuario página 20

KnockON
The KnockON feature allows you to double-tap the screen to easily turn it
on or off.
Turning the screen on
1 Double-tap the center of the Lock screen to turn the screen on.
2 Unlock the screen or access any of the available shortcuts or widgets.
Turning the screen off
1 Double-tap an empty area of the Home screen or the Status Bar.
2 The screen will turn off.
NOTE
For better recognition performance, tap on the center of the screen, but not on
the bottom or on the top of the screen.
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