Originally Posted by
MX727
If you plan on making lots of international calls, buy an unlocked phone and purchase sims at local convenience stores.
Don't know if it applies to the new one, but Verizon offered an international unlock after 60 days under contract for the 4S.
How international is the iPhone 4S 'world phone?' | Macworld
But i've found Skype, Google Voice and MajicJack apps all work fine so I've never pursued it. If anything, i'd use international texts, then call when I got back to the room.