1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-02388bf3-9a3d-4516-a12a-609d1fa3f2ac.png?width=208&height=454)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0953291a-a81c-42b3-9cbe-c072cdab5dc7.png?width=208&height=454)
2. Turn automatic use of mobile data on or off
Press the indicator next to "Wi-Fi Assist" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-42443218-c132-43c4-8cb6-3a817176efac.png?width=208&height=454)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-42443218-c132-43c4-8cb6-3a817176efac.png?width=208&height=454)