1. To adjust display, from the homescreen, scroll to and tap Settings.
   
2. Tap Display.
   
3. To adjust the screen time out, tap Display Timeout, then select desired option.
   
4. To change screen brightness, touch and drag the Brightness toggle and adjust brightness as desired.
   
5. To lock the screen press the Power key.
   
6. To unlock the screen press the Power key.
   
7. Touch and hold the Tap to unlock icon.
   Note: A passcode can be set to lock the device. To set a passcode tap, Settings > Screen lock > toggle On.