1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-21d7a905-4c75-4f06-9feb-a01b697fcf2d.png?width=192&height=340)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-5eff80d5-cab0-49af-a0f8-8a0b7eeaf751.png?width=192&height=340)
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-bbdf3ee7-8761-4e88-928b-2e9b77d69e5e.png?width=192&height=340)
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-bbdf3ee7-8761-4e88-928b-2e9b77d69e5e.png?width=192&height=340)