1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1132c7f7-938f-457c-aad3-c41534318faf.png?width=210&height=458)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7243195c-0864-4ffd-b25b-da438aff5658.png?width=210&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-f9cb5899-eff1-4692-b216-f4ca878c9927.png?width=210&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-f9cb5899-eff1-4692-b216-f4ca878c9927.png?width=210&height=458)