1. Find "Wi-Fi preferences"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-5452e51d-155b-45b5-8bdd-32ec709ec475.png?width=220&height=390)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cd1cc86c-dd29-49c0-8f43-94788483bb1b.png?width=220&height=390)
Press Network & Internet.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2e8ed46a-c46c-4305-bc08-7386cdb1f271.png?width=220&height=390)
Press Wi-Fi.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-719dc2b5-28cc-412e-ada8-ec6558562b99.png?width=220&height=390)
Press Wi-Fi preferences.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-38a8e809-5d24-4f07-9ff9-dd11b1bf5ddb.png?width=220&height=390)
2. Turn automatic use of mobile data on or off
Press the indicator next to "Auto network switch" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2da2a32c-8d9c-42c7-b54c-2ecbe3a3e5c1.png?width=220&height=390)
If you turn on the function, press ENABLE.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ecec45d3-8b8d-4105-a555-5bc763d27421.png?width=220&height=390)
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-2da2a32c-8d9c-42c7-b54c-2ecbe3a3e5c1.png?width=220&height=390)