Select Settings > System.

Display

Adjusts the backlight brightness (Adjusting the Backlight) and color scheme (Adjusting the Color Mode).

Beeper

Turns on and off the tone that sounds for alarms and selections (Setting the Beeper).

GPS

Provides information about the GPS satellite settings and fix.

Auto Power

Turns on the device automatically when power is applied.

Keyboard Layout

Sets the arrangement of the keyboard to an alphabetical or computer keyboard layout.

Language

Sets the on-screen language.

System Information

Provides information about the device and the software version.

Simulator

Turns on the simulator and allows you to set the speed and simulated location.