1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-5422b7a1-ad05-4eab-b4b3-d580826fd6f1.png?width=204&height=366)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-63b21f2b-b7c1-4246-aab5-1f7fb2eb288c.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-1268e276-6cb1-4841-8a09-d7e0536bde10.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-1268e276-6cb1-4841-8a09-d7e0536bde10.png?width=204&height=366)