Select Setup > Display.

Backlight Timeout

Adjusts the length of time before the backlight turns off.

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 the Handheld Battery Save Mode).

Calibrate Screen

Aligns the screen to properly respond to touches (Calibrating the Touchscreen).