1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0bb53274-e81e-44d8-997d-8e5ee3c7a573.png?width=200&height=354)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a1a0a559-d479-4a87-b5f5-a8b693a6b2d5.png?width=200&height=354)
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-3b7e447f-2fec-47ff-8f0f-5b4d43ef4454.png?width=200&height=354)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3b7e447f-2fec-47ff-8f0f-5b4d43ef4454.png?width=200&height=354)