Understanding Your Phone 171. 3.5mm Headset jack: allows you to plug in headphones.2. Volume keys: allow you to adjust the ringer volumewhile in standby mode or adjust the voice volumeduring a call. When receiving an incoming call, brieflypress down either volume key ( ) to mute thering tone. Adjusts text size when reading a message orusing the browser in the Apps folder.3. Power/Accessory Interface connector: allows you toconnect a Travel Charger or other optional accessoriessuch as a USB/data cable or a hands-free headset forconvenient, hands-free conversations.4. Microphone: allows other callers to hear you when youare speaking to them. It also used for theSpeakerphone.5. Power/Lock key: ( ) lets you power your phoneon and off. Also allows you to lock or unlock the touchscreen. For more information on locking your phone,see “Locking and Unlocking the Phone” on page 36.6. Microphone: used for noise cancellation and stereorecording.Rear View of Your Phone1. Camera lens: is used to take pictures and shoot videos.2. External speaker: allows you to hear when theSpeakerphone is turned on.3. S Pen: assists you in performing different functions.4. Flash: is used to provide adequate light when takingpictures in dark places.2413