1. Find "MID"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-847c9ea5-5cf5-4329-9bbb-841f14147d14.png?width=212&height=376)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ee593bf2-d9af-4e9a-af6c-33313b350e47.png?width=212&height=376)
Press Device maintenance.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9c9ddad5-b65b-44b4-9993-8e4f03e38328.png?width=212&height=376)
Press Battery.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2db5cda7-e86b-44c9-a382-0391ac369c82.png?width=212&height=376)
Press MID.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0a54aac8-d116-4d6c-a875-cdfa94e74615.png?width=212&height=376)
2. Extend the battery life
Press APPLY to turn on the function.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f213f79f-6949-416a-a6ab-4206f453c340.png?width=212&height=376)
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-1dc98c2a-56b7-443c-86ac-94667edf73cc.png?width=212&height=376)