Turning data roaming on my mobile phone on or off
If you want to avoid using data when you're abroad, you need to turn off data roaming on your mobile phone. Once done, you can only make voice calls, send SMS and use applications that don't require an internet connection.
1. Find "Mobile Network"
Slide your finger downwards starting from the top edge of the display.
Tap Network and Connections.
Tap Mobile Network.
2. Turn data roaming on or off
Tap the drop down list below "Data services while roaming".
Tap On, Off or Prompt.
3. Return to the home screen
Slide your finger upwards starting from the bottom edge of the display to return to the home screen.