network repeatedly. This increases the demand on battery
power.
Select
>
Settings
>
Settings
and
Phone
>
Network
.
If the network mode is set to dual mode in the network
settings, the device searches for the UMTS network. To set
the device to use only the GSM network, select
>
Settings
>
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
time-out period after which the backlight is switched off,
and adjust the light sensor that observes lighting
conditions. Select
>
Settings
>
Settings
and
General
>
Personalisation
>
Display
.
●
Leaving applications running in the background increases
the demand on battery power. To access the applications
you do not use, press and hold the menu key, and select
an application.
Useful information
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