Seems there is a bit of confusion about our last post.  Here are some of the most common questions, with some corresponding answers.  —  Q. Why do you say it is unlocked if you can’t activate a non AT&T sim?  —  A. There is a difference between unlocking and activation.

Source:   iphoneSimFree.com - Choose the provider you want - use any SIM card with your iphone - in any country

Link:   http://www.iphonesimfree.com/cgi-bin/iphonesimfree…