Activate power saving modePress the power key , and select Activate power saving. To deactivate power savingmode, press the power key , and select Deactivate power saving.Close the applications you are not usingPress and hold the home key, swipe until the desired application is displayed, andselect .Sounds, themes, and effects• Mute unnecessary tones, such as key tones.• Use wired headphones, rather than the loudspeaker.• Change the length of the time-out period after which the phone display switchesoff.Set the length of the time-out periodSelect > Settings and Phone > Display > Light time-out.Activate a dark theme and wallpaperSelect > Settings and Themes > General.To change the wallpaper, on the home screen, select > Change wallpaper.Deactivate background animation effectsSelect > Settings and Themes > General > > Theme effects > Off.Decrease the brightness of the displaySelect > Settings and Phone > Display > Brightness.Deactivate the Big clock screen saverSelect > Settings and Themes > Screen saver > None.Network use• If you are listening to music or otherwise using your phone, but do not want tomake or receive calls, activate the offline profile.• Set your phone to check for new mail less frequently.• Use a Wi-Fi connection to connect to the internet, rather than a mobile data (GPRSor 3G) connection.• If your phone is set to use both GSM and 3G networks (dual mode), the phoneuses more power when searching for the 3G network.30 Basic use