I wish I would have read up more on this before I actually needed it...it worked well the majority of the time; but it was still a little confusing when I would get a text that I used it not correctly.

Save yourself the horrible experience and the money "down the drain"- buy through amazon if you believe the hype, so that you have recourse to their "A-to-Z guarantee" if the chatsim fails as miserably for you as it did for me, or don't buy it at all!