1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-13e58d94-dc92-4c54-b2fa-27d0a92875c2.png?width=206&height=444)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1ec974f6-0436-4a96-8780-f27372025f7f.png?width=206&height=444)
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-22c0eb4e-630f-4580-b260-adf50a026e1a.png?width=206&height=444)
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-22c0eb4e-630f-4580-b260-adf50a026e1a.png?width=206&height=444)