• If the signal strength of the cellular network varies much in your area, your devicemust scan for the available network repeatedly. This increases the demand onbattery power.If the network mode is set to dual mode in the network settings, the device searchesfor 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 displaysettings, you can adjust the display brightness and change the time-out period afterwhich 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 batterypower. To access the applications you are not using, press and hold the menu key,and select an application.Increase available memoryDo you need more available device memory for new applications and content?View how much space is available for different data typesSelect Menu > Applications > Office > File mgr..Many features of the device use memory to store data. The device notifies you if thememory in different memory locations is low.Increase available memoryTransfer 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 theinstallation files to a compatible computer.• Images and video clips in Gallery. Back up the files to a compatible computer.Find help 9