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
Tools
Settings
>
>
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
Personalisation
>
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
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
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, and select
Phone
Network
>
>
Settings
General
>
>
Display
and
Light time-out
Options
> Exit.
Free memory
Many features of the device use memory to store data.
The device notifies you if the device or the memory card
(if available) memory is low.
To view the types of data you have in the device and how
much memory the different data types consume, press
Network
, and select
details. The amount of available memory is shown in Free
memory.
To free device memory, transfer data to a compatible
memory card (if available) or to a compatible PC.
To remove data to free memory, use File manager to
delete files you no longer need, or go to the respective
>
application. You can remove the following:
or
Messages in the folders in Messaging and retrieved e-
●
mail messages from the mailbox
Saved web pages
●
, scroll
Contact information
●
Calendar notes
●
Applications shown in Application manager that you
●
do not need
Installation files (.sis or .sisx) of applications you have
●
installed to a compatible memory card (if available).
Tools
File mgr.
Options
>
>
Useful information
Memory
>
19