Select Setup > Display.

Backlight Timeout

Adjusts the length of time before the backlight turns off.

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).

Appearance

Sets the displayed accent colors for day and night.

Screen Capture

Allows you to save the image on the device screen.

Accessibility

Adds or changes device features to make your device more accessible (Accessibility Settings).