LG -D686 Quick Reference Manual page 355

Function
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KnockON
You can Turn on/off the screen by just double-tap.
To activate KnockON feature
1 From the Home screen, touch Apps
2 Place a checkmark on Knock on/off.
Double-tap the center screen quickly to turn it on. Screen will be turned off when you
double-tap the status bar in any screen (except on the camera viewfinder) or empty
area on the LG Home screen and Lock screen.
NOTE:
· When turning the screen on, make sure you do not cover the proximity sensor.
Doing so will turn the screen off immediately after turning it on in order to
prevent abnormal turning on in your pocket or bag.
· The screen turns on when you hold a smartphone and double-tap in the center
of the screen, but this method may cause discomfort depending on how you
use. In this case, please use the power button to turn on the screen.
18
> Settings > Display > KnockON.