Switching to AT&T? Unlocked iPhone 3gs with T-Mobile.

[mitch3gs]

I might switch to AT&T, currently I'm using an unlocked White iPhone 3gs, jailbroken. When I switch to AT&T, do I just pop in an AT&T SIM card, am I good to go? Or do I have to do anything else?


Thanks.

 

[Thomasjtsi]

If it's originally an At&t 3GS then there's nothing to do at all.