1. Find "Mobile Data"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7191223-f-9b7e2137-5d86-4a16-93ce-63fadbdc6e20.png?width=336&height=448)
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7191223-f-4b1a7453-7dad-41b9-bc1b-d8b402d5a87e.png?width=336&height=448)
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/7191223-f-fd32bc59-c0ac-4b79-bcea-60521c23d04a.png?width=336&height=448)
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/7191223-f-fd32bc59-c0ac-4b79-bcea-60521c23d04a.png?width=336&height=448)