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prevent the automatic download of new maps. See
"Maps", p. 40.
● 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. To
only use the GSM network, press
, and select
Tools > Settings > Phone > 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. Press
, and select Tools > Settings > General >
Personalisation > Display and 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
, scroll
to an application in the list, and press C.
Pressing C does not close Music player. To close Music
player, select it from the list and Options > Exit.
Free memory
Many features of the device use memory to store data.
The device notifies you if the device memory or the
memory card memory (if available) is low.
To view how much memory different data types consume,
press
, and select Tools > File mgr., the desired
memory, and Options > Details > Memory.
To free device memory, transfer data to a compatible
memory card (if available) or to a compatible PC.
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
PC.
● Images and video clips in Photos. Back up the files to a
compatible PC using Nokia Nseries PC Suite.
© 2008 Nokia. All rights reserved. 21