How does Sprint determine when an iPhone 4S should be unlocked for international SIM card? I've heard stories ranging from
(1) if you bought the phone before a certain November 2011 date (11/10? not sure), then it was always unlocked.
(2) if you're a customer in good standing for 90 days, then you can call up international service department to unlock it, to
(3) What international unlock? Nonsense!