User guide

device periodically tries to establish
a packet data connection. To
prolong the operating time of your
device, select Menu > Ctrl.
panel > Settings and
Connection > Packet data >
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.
• 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 3G network.
You can set the device to use only
the GSM network. To use only the
GSM network, select Menu > Ctrl.
panel > Settings and Phone >
Network > Network mode >
GSM.
• 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 backlight
is switched off. Select Menu > Ctrl.
panel > Settings and General >
Personalisation > Display >
Light time-out. To adjust the light
sensor that observes lighting
conditions and adjusts the display
brightness, in the display settings,
select Light sensor.
• Leaving applications running in the
background increases the demand
on battery power. To close the
applications you are not using,
press and hold the menu key, scroll
to the application, and press the
backspace key.
• To save power, activate the power
save mode. Press the power key,
and select Activate power saving.
To deactivate it, 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 activated.
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