Your Nokia N8117Some headsets do not include a microphone. For phonecalls, use such a headset with a remote control unit or themicrophone of the device.The Nokia Audio Adapter AD-54 has multimedia volumecontrols that are used to adjust the volume only for musicor video playback.When using certain headset enhancements, for example,the Nokia Audio Adapter AD-54, to adjust the volumeduring a call, use the volume key in the device.Prolong battery lifeFeatures using Bluetooth connectivity, wireless LAN, andpacket data connections, or allowing such features to runin the background while using other features, increase thedemand on battery power and reduce the battery life.To prolong the operating time of your device, switchBluetooth connectivity off when you do not need it. Alsoset Packet data connection to When needed for thedevice to use a packet data connection only if you start anapplication or action that needs it. See ‘Packet data’,p. 123.To close the applications running in the background thatyou do not use, press and hold , select the applicationsfrom the list, and press .MapsPress , and select Maps. With an external BluetoothGPS receiver and Maps, you can see your current locationon the map, browse maps for different cities and countries,search for addresses and different points of interest, andplan routes from one location to another.You can also purchase extra services, such as city guidesand a navigation service with voice guidance.For more information on the application, seewww.nseries.com/support or your local Nokia website.Download!Download! (network service) is a mobile content shopavailable on your device. You can browse, download, andinstall items, such as applications and media files, to yourdevice from the internet.Press , and select Download!.The items are categorized under catalogs and foldersprovided by different service providers. Some items may bechargeable, but you can usually preview them free ofcharge.