1. Find "Wi-Fi preferences"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-767cdf2b-308f-4ec5-833c-fe89a77b852f.png?width=194&height=388)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c555acd5-52ef-488b-8f17-068d0616830a.png?width=194&height=388)
Press Network & Internet.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-fb9915a8-9874-47e2-8a38-49b0f7cb6837.png?width=194&height=388)
Press Wi-Fi.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7f40d5d2-2b98-405e-a608-ae625bf92870.png?width=194&height=388)
Press Wi-Fi preferences.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e31cc847-7687-43b7-85bb-a1eeebbc81b2.png?width=194&height=388)
2. Turn automatic use of mobile data on or off
Press the indicator next to "Turn on Wi-Fi automatically" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8336a969-6a2c-4c1b-b4ef-a3c59fb2c6a2.png?width=194&height=388)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8336a969-6a2c-4c1b-b4ef-a3c59fb2c6a2.png?width=194&height=388)