1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ac691e00-233e-4124-ac91-6911b6a399b7.png?width=204&height=366)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2ef22dda-5bdf-436a-8c57-9ccb251aac1a.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-caee57ef-247b-4006-935d-da48b3753bfd.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-caee57ef-247b-4006-935d-da48b3753bfd.png?width=204&height=366)