1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e60c4bc3-5d64-410f-8637-5024e51875ae.png?width=212&height=458)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0d4e41fc-a979-4bce-aa7e-e18091b33294.png?width=212&height=458)
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-652c4f60-f6f9-46d1-85c6-cd682fdef9ef.png?width=212&height=458)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-652c4f60-f6f9-46d1-85c6-cd682fdef9ef.png?width=212&height=458)