are not supplied with the SIM card, contact the operator whose SIM card is inyour device.Prolong battery lifeMany features in your device increase the demand on battery power and reduce thebattery life time. To save battery power, note the following:● Features that use Bluetooth coonectivity, or allowing such features to run in thebackground while using other features, increase the demand on battery power.Switch off Bluetooth when you do not need it.● Features that use a wireless LAN (WLAN), or allowing such features to run in thebackground while using other features, increase the demand on battery power.The WLAN on your Nokia device switches off when you are not trying to connect,not connected to an access point, or not scanning for available networks. Tofurther reduce battery consumption, you can specify that your device does notscan, or scans less often, for available networks in the background.● If you have selected Packet data connection > When available in theconnection settings, and there is no packet data coverage (GPRS), the deviceperiodically tries to establish a packet data connection. To prolong the operatingtime of your device, select Packet data connection > When needed.● If the signal strength of the cellular network varies much in your area, your devicemust scan for the available network repeatedly. This increases the demand onbattery power.● The backlight of the display increases the demand on battery power. In thedisplay settings, you can adjust the display brightness and change the time-outperiod after which the backlight is switched off. Select Menu > Settings andPhone > Display > Brightness or Light time-out.● Leaving applications running in the background increases the demand on batterypower. To close the applications you do not use, press and hold the menu key,select Options > Show open apps., and navigate to the application with themenu key. Press and hold the menu key, and select Exit.© 2009 Nokia. All rights reserved.14
