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Thread: Changing Carriers from T-mobile->Cingular

  1. #1
    Default Changing Carriers from T-mobile->Cingular
    Hey, I just recently got my iPhone and it is unlocked. Currently I am using T-Mobile for my carrier. But now my family wants to change to Cingular. Will my iPhone let me use Cingular normally without the 2 year plan still?

  2. #2
    If you have the original AT&T sim. But when you activate it be careful not to let iTunes upgrade your phone. Also, I believe it is possible to activate the sim on another phone and then just put it into the iphone. Maybe one of the more knowledgeable people can chime in here in case I am wrong about this.

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