120Tap Custom power saving to create a checkmark andactivate the feature. Custom power saving allows youto select the items that will be used to save power.3. If you selected Custom power saving, tap Custom powersaving settings to access the following options:• Power saving on at: allows you to set the battery power levelwhen Power saving mode will be enabled.• Turn off Wi-Fi: automatically turns off Wi-Fi when you are notconnected with Mobile AP.• Turn off Bluetooth: automatically turns off Bluetooth when it isnot in use.• Turn off GPS: automatically turns off GPS when it is not in use.• Turn off Sync: automatically turns off Sync when the phone isnot synchronizing with the server.• Brightness: allows you to manually adjust the brightness of thescreen. Tap this option to enable the next Brightness option.• Brightness: allows you to set the Brightness percentage of thescreen.• Screen timeout: allows you to set the time before the screentimes out and goes into lock mode.4. Tap Learn about power saving to learn about variousways to conserve battery power.StorageFrom this menu you can view the memory allocation for thememory card and USB as well as mount or unmount the SDcard.For more information about mounting or unmounting the SDcard, see “Memory Card” on page 42.To view the memory allocation for your external SD card: From the Home screen, tap ➔ Settings ➔Storage.The available memory displays under the Totalspace and Available space headings for both Devicememory, USB storage, and SD card.Formatting USB storage Tap Format USB storage to erase all data on the phone’sUSB storage such as music and photos.SD card1. Tap Unmount SD card to unmount your SD card so thatyou can safely remove it, then tap OK.