Factory unlock vs ATT off-contract

[Moonflow]

Ok, so i've been reading about how ATT off-contract phones actually come unlocked, and some people are worry about ATT locking up their phones after they put in an ATT sim.

Well my question is, the factory unlock 4s is scheduled to launch anytime this month so if i wait and buy a factory unlock 4s at the apple store, there's no way ATT could lock my phone again correct? I would still be using an ATT sim card, but i will travel and planning to bring my phone with me.

2nd question is, if ATT ask for the IMEI to activate the data, they still can't lock the "factory unlocked" iphone that i'm planning to get at the apple store right?

Thanks!

 

[FreakinEurekan]

if i wait and buy a factory unlock 4s at the apple store, there's no way ATT could lock my phone again correct?

That's correct. The "locked" state is actually controlled by Apple, so AT&T can't force it to a different state.

 

[Moonflow]

Cool thanks! Guess will wait then!

 

[KPOM]

AT&T also shouldn't be able to lock the off-contract phones that came unlocked. Again, the database is under Apple's control, and the only time it gets "locked" is when it is sold.