1. Find "Ultra power saving"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4a3e224f-1907-4f9b-8062-4433f22405fd.png?width=210&height=372)
Press Power saving.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b6c2045d-586a-41f8-961b-420771441d21.png?width=210&height=372)
Slide your finger upwards on the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c617d0f3-cb51-4a68-8b72-2a330163f4cc.png?width=210&height=372)
Press Ultra power saving.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d0f01500-79ee-4ebc-b720-dfae8681c814.png?width=210&height=372)
2. Extend the battery life
Press Enable.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9a2af44b-5b3f-4e56-8834-509f180d4d0e.png?width=210&height=372)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b05b92be-3139-4577-a8ad-911bb971d79a.png?width=210&height=372)