Nokia N97 white User Guide - Page 12

• Features that use Bluetooth technology, or allowing such the GSM network, select Menu > Settings and features to run in the background while using other Connectivity > Network > Network mode > GSM. features, increase the demand on battery power. Deactivate Bluetooth technology when you do not need it. • The backlight of the display increases the demand on battery power. In the display settings, you can change the length of the time-out period after which the • Features that use wireless LAN (WLAN), or allowing such backlight is switched off. Select Menu > Settings and features to run in the background while using other Phone > Display > Light time-out. To adjust the light features, increase the demand on battery power. WLAN sensor that observes lighting conditions and adjusts the on your Nokia device deactivates when you are not trying display brightness, in the display settings, select Light to connect, not connected to an access point, or not sensor. scanning for available networks. To further reduce • Leaving applications running in the background battery consumption, you can specify that your device increases the demand on battery power. To close the does not scan, or scans less often, for available networks applications you are not using, if they are not responding, in the background. select Options > Show open apps., and go to the • If you have set Packet data connection to When application using the menu key. Press and hold the menu available in connection settings, and there is no packet key to open the application, and select Options > Exit. data coverage (GPRS), the device periodically tries to establish a packet data connection. To prolong the Free memory operating time of your device, select Packet data connection > When needed. To view how much space is available for different data types, • The Maps application downloads new map information select Menu > Applications > Office > File mgr.. when you scroll to new areas on the map, which increases the demand on battery power. You can prevent the automatic download of new maps. Many features of the device use memory to store data. The device notifies you if the memory in different memory • If the signal strength of the cellular network varies much locations is low. in your area, your device must scan for the available network repeatedly. This increases the demand on To free memory, transfer data to a compatible memory card battery power. (if available) or to a compatible computer. If the network mode is set to dual mode in the network settings, the device searches for the 3G network. You can set the device to use only the GSM network. To use only To remove data you no longer need, use File manager or open the respective application. You can remove the following: 12 © 2009 Nokia. All rights reserved.