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If the network mode is set to dual mode in the network settings, the device
searches for the 3G network. To set the device to use only the GSM network, select
Menu > Settings and Connectivity > Network > Network mode > GSM.
● The backlight of the display increases the demand on battery power. In the
display settings, you can adjust the display brightness and change the time-out
period after which the backlight is switched off. Select Menu > Settings and
Phone > Display > Brightness or Light time-out.
● Leaving applications running in the background increases the demand on battery
power. To access the applications you are not using, press and hold the menu
key, and select an application.
Free memory
To view how much space is available for different data types, select Menu >
Applications > Office > File mgr..
Many features of the device use memory to store data. The device notifies you if the
memory in different memory locations is low.
To free memory, transfer data to a compatible memory card (if available) or to a
compatible computer.
To remove data you no longer need, use File manager or open the respective
application. You can remove the following:
● Messages in the folders in Messaging and retrieved e-mail messages in the
mailbox
● Saved web pages
● Contact information
● Calendar notes
● Applications shown in Application manager that you do not need
● Installation files (.sis or .sisx) of applications you have installed. Transfer the
installation files to a compatible computer.
● Images and video clips in Gallery. Back up the files to a compatible computer.
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