1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c5294f0b-678b-4709-82b9-ca6a3e3da978.png?width=204&height=366)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4be44701-1fc4-45f9-a846-4be894fc592e.png?width=204&height=366)
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-b84b9c14-e625-4372-ba99-a77bbb60c5d3.png?width=204&height=366)
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-b84b9c14-e625-4372-ba99-a77bbb60c5d3.png?width=204&height=366)