Basics142 After fully charging, disconnect the device from the wireless charger.r When there are foreign materials between the device and the wireless charger, thedevice may not charge properly.r If you use the wireless charger in areas with weak network signals, you may losenetwork reception.r Use Samsung-approved wireless chargers. If you use other wireless chargers, thebattery may not charge properly.Power saving modeSave the battery power by limiting the device’s functions.On the Home screen, tap Apps ĺ Settings ĺ Battery ĺ Power saving mode, and then tapthe switch to activate it.To automatically activate power saving mode when the remaining battery power reaches thepreset level, tap Start power saving and select an option.Ultra power saving modeUse this mode to extend the device’s battery power. In ultra power saving mode, the deviceperforms the following:r Displays colours on the screen as grey tones.r Restricts the available apps to essential and selected apps only.r Deactivates the mobile data connection when the screen turns off.r Deactivates the Wi-Fi and Bluetooth features.On the Home screen, tap Apps ĺ Settings ĺ Battery ĺ Ultra power saving mode, andthen tap the switch to activate it.To deactivate ultra power saving mode, tap MORE ĺ Disable Ultra power saving mode.The usage time left shows the time remaining before the battery power runsout. Usage time left may vary depending on your device settings and operatingconditions.
