11.Power/Accessory Interface Connector allows you to connect a power cable and optional accessories, such as a USB cable.
12.Plus Code Dialing Key automatically dials the international access code for the country in which you are located (for instance, 011 for international calls placed from the United States).
13.Space/Pound Key enters the pound [#] character for calling features. In text entry mode, press to enter a space.
14.Back Key (Clear) deletes characters from the display in text entry mode. When in a menu, press the Back key to return to the previous menu. This key also allows you to return to the previous screen in a Sprint PCS Vision session.
15.Camera Key allows you to take pictures when you are in camera mode.
16.End Key (Power) ends a call. Press and hold this key for two seconds to turn your phone on or off. While in the main menu, it returns the phone to standby mode and cancels your input. When you receive an incoming call, press to enter silent mode and mute the ringer.
17.Right Softkey allows you to select softkey actions or menu items corresponding to the bottom right line on the display screen.
18.Headset Jack allows you to plug in an optional headset for convenient,