I am traveling to Spain for a month in a few weeks and I have a few questions. But first, here is my information: I have a BlackJack II and my carrier is AT&T. I have the unlimited text messaging and unlimited data plan. So onto my questions:

If I get the international plan, what is the cost per minute to call someone:
in the US with a US carrier?
in Spain with a US carrier?
in Spain with a European carrier?

What is the cost to text someone:
in the US with a US carrier?
in Spain with a US carrier?
in Spain with a European carrier?

How does my data plan work when in Europe?


I know I have a lot of questions, but I would really appreciate the help. I do not want to come back from my trip with a huge bill. Thanks

Sorry that we was unable to answer your questions.

Wondered if you have the questions answered, perhaps by your mobile carrier?

Didn't see this before.
Almost certainly your AT&T plan will not be valid abroad and you will be charged roaming charges - check with AT&T but they are likely to be VERY expensive.
Check with mobile operators in Spain but normally the cheapest option for voice and text would be a PAYG sim, prices will veary but should be a lot cheaper than using and American SIM.
The Blackjack II is quad band?
Make sure it's unlocked and you should have no problem just using a Spanish PAYG SIM.
Good luck.