NO NO NO - just so no one gets burned...AT&T does NOT charge .50 a call - the other poster is correct - its closer to $2.80 a minute. the 0.50 is per TXT. both those prices are WITH the $5.99 /mo international service, or it would be even more. we use AT&T and believe have the highest int'l rates.
the original poster appeared to want the phone for intra-bz use, and was answered well. for us visitors calling home, there are other options available out there, such as renting a BTL phone while visiting (about $1 less per minute), or skype (with conditions, of course).