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. Remember, you need to turn on mobile data.
Find "Mobile networks"
Slide your finger downwards starting from the top right side of the display.
Press Mobile networks.
Turn data roaming on or off
Press Data roaming to turn the function on or off.
Return to the home screen
Press the home icon to return to the home screen.