Read help info
You can limit your data usage when abroad by turning off data roaming. You'll then not be able to access the internet using the mobile network when abroad. You can still use Wi-Fi even though data roaming is turned off.
1. Find "Data services while roaming"
Slide two fingers downwards starting from the top the screen.
Press the settings icon.
Press Mobile networks.
Press Data services while roaming.
2. Turn on data roaming
3. Turn off data roaming
4. Return to the home screen
Press the Home key to return to the home screen.