With Knock ON you can set the phone to turn the screen on by quickly double-tapping the screen. Double-tap an empty area in the Home screen, Status Bar, or Lock screen to turn the screen off.
Knock Code is a security feature that enables a user to unlock the phone when the screen is off. The Home screen can be accessed directly if you tap the sequence anywhere on the screen.
Knock ON and Knock Code can be used simultaneously.
Note: Some Settings, Menus, or Icons may differ from that of your device depending on your software version and wireless service provider.