Turning data roaming on my device on or off
If you want to avoid using data when you're abroad, you need to turn off data roaming on your device. Once done, you can only make voice calls, send SMS and use applications that don't require an internet connection. Remember, you need to activate data connections before you can turn data roaming on or off.
1. Find "Mobile Data"
2. Turn data roaming on or off
Depending on the current setting, the function is turned on or off.