Lock the device screen, set and change security lock, and locate device.
INSTRUCTIONS & INFO
To lock the screen, press the Power/Lock key.
To unlock, press the Power/Lock key. Note: To wake the screen using Knock On, tap the screen twice. To enable this feature in settings, go to Settings > General > Gestures > Knockon
Touch and drag the screen in any direction.
To enable and use Knock Code, swipe down from the Notifications bar.