AT&T has the following chart on their webpage at http://www.wireless.att.com/learn/international/roaming/international-roaming.jsp which outlines roaming rates while outside the U.S. We’re going to concentrate on the Text Messages row, also known as SMS messages.
|SENDING TEXT, PICTURE, AND VIDEO MESSAGES WHEN OUTSIDE THE U.S.|
|Text Messages||$0.50 per message sent|
|Picture and Video Messages||$1.30 per message sent|
Now lets do the math here one step at a time.