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. Remember, you need to turn on mobile data before you can use this function.
1. Find "MOBILE DATA"
Tap and hold MOBILE DATA.
2. Turn data roaming on or off
Tap OK to confirm.