1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b0bd629c-49fb-4b8d-b764-bb5b2f5533f9.png?width=208&height=368)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e38655f3-8ce9-4346-b655-986fae218174.png?width=208&height=368)
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-97a1770c-cbc4-4543-9a10-8bd94fc108fc.png?width=208&height=368)
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-97a1770c-cbc4-4543-9a10-8bd94fc108fc.png?width=208&height=368)