Greetings. I wish to bring my wife's first generation unlocked / jailbroken iPhone with me when we vacation to Serbia / Montenegro in May of 2009. I looked at AT&T rates over there and even with international plans they still wish to charge 3.99 a min roaming on Telenor. I have heard of the possibility to use the Telenor sim in an unlocked iPhone. Ideally I wish to just get a prepaid sim and use it the month I will be there. Any advice or help will be greatly appreciated.