1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7070225-f-a8c5723a-edb9-43e0-ba06-3dbe4dc836a7.png?width=304&height=436)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7070225-f-78f1440e-97ca-4bdc-a1fe-8003605277ad.png?width=304&height=436)
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/7070225-f-917b7869-45cf-4888-8b57-cafe68480ae8.png?width=304&height=436)
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/7070225-f-917b7869-45cf-4888-8b57-cafe68480ae8.png?width=304&height=436)