1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-eb555ab4-f8d1-4bdd-b616-012ba4481188.png?width=206&height=444)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-bb717be5-ed7c-407c-bb1d-ab51bfcf7c3c.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-43d64321-2b7b-4b68-85e6-f59e2606b8af.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-b39c62fb-ae2f-4a62-a769-6676a91c0c2f.png?width=206&height=444)