1. Find "Wi-Fi"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-637d3391-6eab-4aa3-8fe4-bd7f7faf78e8.png?width=206&height=434)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-af3fb3f3-15d8-4ea5-a0b6-2538d96ea4f8.png?width=206&height=434)
Press Network & Internet.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-56e563cb-fcf6-41ac-b350-7c9a67e34098.png?width=206&height=434)
Press Wi-Fi.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-162761ab-b2fa-4fb5-852a-3f73a01b840d.png?width=206&height=434)
2. Turn on Wi-Fi
Press the indicator next to "Use Wi-Fi" to turn on the function.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-16c546f7-d20e-4eaa-8278-edfc4c6e8079.png?width=206&height=434)
3. Turn automatic use of mobile data on or off
Press Wi-Fi preferences.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-9e638ea1-1591-4601-8423-447d71b9a22f.png?width=206&height=434)
Press Advanced.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-64b7e3e0-c5ff-49d0-a0fe-7f9e9a906631.png?width=206&height=434)
Press the indicator next to "Switch to mobile data automatically" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4e6edf4c-ba50-4704-b2dc-1599d4b297e2.png?width=206&height=434)
4. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4e6edf4c-ba50-4704-b2dc-1599d4b297e2.png?width=206&height=434)