1 Find "Mobile network"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Network & Internet.
2 Turn on Wi-Fi
Press the indicator to turn on the function.
3 Turn automatic use of mobile data on or off
Press Wi-Fi preferences.
Press the indicator next to "Auto-switch to mobile network" to turn the function on or off.
4 Return to the home screen
Press the Home key to return to the home screen.