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● Features that use wireless LAN (WLAN), or allowing such features to run in the
background while using other features, increase the demand on battery power.
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. To further
reduce battery consumption, you can specify that your device does not scan, or scans
less often, for available networks in the background.
● If you have set Packet data connection to When available in connection settings,
and there is no packet data coverage (GPRS), the device periodically tries to establish
a packet data connection. To prolong the operating time of your device, select Packet
data connection > When needed.
● The Maps application downloads new map information when you move to new areas
on the map, which increases the demand on battery power. You can prevent the
automatic download of new maps.
● If the signal strength of the cellular network varies much in your area, your device
must scan for the available network repeatedly. This increases the demand on battery
power.
If the network mode is set to dual mode in the network settings, the device searches
for the UMTS network. You can set the device to use only the GSM network. To only
use the GSM network, select Menu > Settings and Connectivity > Network >
Network mode > GSM.
● The backlight of the display increases the demand on battery power. In the display
settings, you can change the time-out after which the backlight is switched off, and
adjust the light sensor that observes lighting conditions and adjusts the display
brightness. Select Menu > Settings and Phone > Display > Light time-out or
Light sensor.
● Leaving applications running in the background increases the demand on battery
power. 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 the menu key.
Press and hold the menu key, and select Exit.
Free memory
To view how much space is available for different data types, select Menu >
Applications > File mgr..
To remove data you no longer need, use File manager or go to the respective application.
You can remove the following:
● Messages in the folders in Messaging and retrieved e-mail messages from the mailbox
● Saved web pages
● Contact information
● Calendar notes
● Applications shown in Application manager that you do not need
● Installation files (.sis or .sisx) of applications you have installed. Transfer the
installation files to a compatible computer.
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