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. If it is not available, the device
uses the available GSM network. To only use the
GSM network, press
Settings
Phone
>
mode
> GSM.
The backlight of the display increases the
●
demand on battery power. To change the time-
out after which the backlight is switched off,
press
, and select
General
Personalisation
>
Light
time-out. To adjust the light sensor that
observes the lighting conditions and adjusts the
brightness of the display, in the display settings,
select
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
Exit.
14
, and select
Tools
>
Network
Network
>
>
Tools
Settings
>
>
Display
>
>
Options
>