Basics173 Tap APPLY.After entering maximum power saving mode, on the Home screen, tap and select an appto use. To remove apps, tap Edit and select an app with .To deactivate maximum power saving mode, tap Turn off Maximum power savingmode.The estimated battery usage time may vary depending on your device settings andoperating conditions.Planning battery consumptionManage your battery consumption by setting how the device will utilise your device’sremaining battery power.The following features may not be available depending on the region or serviceprovider.Reserve battery modeSave the battery power by reserving it for calls and messages. In reserve battery mode, youcan use only the Phone and Messages apps.To use reserve battery power mode, Launch the Settings app and tap Device maintenance Battery Reserve battery for calls, and then tap the switch to activate it. Then, drag thebar to set the amount of battery power reserved for calls and messages. When your batterypower reaches the preset level, the device will alert you and activate reserve battery mode.To deactivate reserve battery mode, tap the switch.Extending the battery lifeExtend the battery life by automatically activating ultra power saving mode when the batteryreaches a certain percentage.Launch the Settings app and tap Device maintenance Battery Extend battery time,tap the switch to activate it, and then select a level.