network. You can set the device to use only the GSMnetwork. To use only the GSM network, selectMenu > Tools > Settings and Phone >Network > Network mode > GSM.● The backlight of the display increases the demandon battery power. In the display settings, you canchange the length of the time-out period afterwhich the backlight is switched off. Select Menu >Tools > Settings and General >Personalisation > Display > Light time-out.● Leaving applications running in the backgroundincreases the demand on battery power. To closethe applications you are not using, press and holdthe menu key, scroll to the application, and press C.● To save power, activate the power save mode. Pressthe power key, and select Activate power saving.To deactivate it, press the power key, and selectDeactivate power saving. You may not be able tochange the settings of certain applications when thepower save mode is activated.Free memoryTo view how much memory is available for differentdata types, select Menu > Applications > Office >File mgr..Many features of the device use memory to store data.The device notifies you if available memory is low.To free memory, transfer data to an alternativememory (if available) or compatible computer.To remove data you no longer need, use File manageror the respective application. You can remove thefollowing:● Messages in the folders in Messaging and retrievede-mail messages from the mailbox● Saved web pages● Contact information● Calendar notes● Applications shown in Application manager that youdo not need● Installation files (with .sis or .sisx file extensions) ofinstalled applications. Back up the installation filesto a compatible computer.● Images and video clips in Photos.22 Find help