1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3912f2e4-5776-4628-97d2-058a176337bd.png?width=192&height=340)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4d4397c0-c368-4b6e-a1ff-364e98ec2bfc.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-0a25ab97-d9be-402d-a30a-fe5465c6b8a1.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-0a25ab97-d9be-402d-a30a-fe5465c6b8a1.png?width=192&height=340)