Select Setup > Display.

Backlight Timeout

Adjusts the length of time before the backlight turns off.

Orientation Lock

Locks the screen orientation in portrait or landscape mode, or allows the screen to change orientation automatically based on the device orientation.

Screen Capture

Allows you to save the image on the device screen.

Battery Save

Saves the battery power and prolongs the battery life by turning off the screen when the backlight times out (Turning On Battery Save Mode).