2 hours ago
an hour ago
Starting with the simplest troubleshooting.
Go to Settings>Messages>check to see if MMS Messaging and Send as SMS are enabled.
If it is then check if Data Roaming is enabled.
2 hours ago - last edited 2 hours ago
In order to send/receive MMS your DATA has to be ON even though data allowance will not be used (affected).
Try it...