1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-91449b73-db9c-46aa-849a-e9d797bc91d1.png?width=210&height=456)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-49868c36-cf25-4ddd-89d1-2c9b128a24a3.png?width=210&height=456)
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-4af73182-f112-437f-baf6-192655287336.png?width=210&height=456)
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-4af73182-f112-437f-baf6-192655287336.png?width=210&height=456)