1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7070225-f-ab26c213-9bd0-4fc1-a4cd-a6e724ffe518.png?width=312&height=446)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7070225-f-50851e1a-08ca-4f63-87ea-b7e8ee230487.png?width=312&height=446)
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-2583951f-f4fe-43a5-be92-74ce76f99016.png?width=312&height=446)
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-2583951f-f4fe-43a5-be92-74ce76f99016.png?width=312&height=446)