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prolong the operating time of your device, select
Packet data connection > When needed.
● The Maps application downloads new map
information 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.
See "Maps", p. 92.
● 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 brightness of the
display. Press
, and select Tools > Settings >
General > Personalisation > Display and Light
time-out or Brightness.
● 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.
● To turn on the power save mode, press the power
key, and select Activate power saving. To turn off
the power save mode, press the power key, and
select Deactivate power saving. You may not be
able to change the settings of certain applications
when the power save mode is turned on.
Free memory
Many features of the device use memory to store data.
The device notifies you if the device memory, mass
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 or mass 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
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