121. 3.5mm Headset jack: allows you to plug in headphones.2. Volume keys: allow you to adjust the ringer volume whilein standby mode or adjust the voice volume during acall. When receiving an incoming call, briefly presseither volume key ( ) to mute the ring tone.Adjusts text size when reading a message or using thebrowser in the Apps folder.3. Microphone: allows callers to hear you when you arespeaking to them.4. 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.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 30.6. Microphone: used for noise cancellation and stereorecording.Rear View of Your Phone1. External speaker: allows you to hear when theSpeakerphone is turned on.2. Flash: is used to provide additional light when takingpictures in dark places.3. Camera lens: is used to take pictures and shoot videos.231