Basics
On the Apps screen, tap Settings →General →Power saving, and tap the Ultra power saving mode switch to activate it. Alternatively, open the quick setting panel and tap U. power saving to activate it.
Access additional options.
Essential apps 
Add more apps to use. 
Remaining battery power |
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| Estimated maximum |
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| standby time |
To add an app to the Home screen, tap 
and select an app.
To remove an app from the Home screen, tap 
→Remove, select an app with 
, and then tap Done.
To change the settings for ultra power saving mode, such as network connectivity or sound, tap 
→Settings.
To deactivate ultra power saving mode, tap 
→Disable ultra power saving mode.
The estimated maximum standby time shows the time remaining before the battery power runs out if the device is not used. Standby time may vary depending on your device settings and operating conditions.
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