1 Find" Mobile networks"
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press the settings icon at the top of the screen.
Press Mobile networks.
2 Turn data roaming on or off
Press Data roaming to turn the function on or off.
If you turn on data roaming, press OK.
3 Return to the home screen
Press the Home key to return to the home screen.