Cause 1 of 5: Data roaming is turned off
To send and receive MMS when abroad, data roaming needs to be turned on.
Solution: Turn on data roaming.
1 Find "Mobile networks"
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press More.
Press Mobile networks.
2 Turn data roaming on or off
Press the indicator next to "Data roaming" to turn the function on or off.
If you turn on data roaming, press OK.
3 Return to the home screen
Press the Home key to return to the home screen.