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Thread: Upgrade original iPhone (edge only) with 3GS from eBay

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Hello all, We have an old iPhone with the unlimited data plan. We are thinking of buying a 3GS and pop the old sim card in it. I know that
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  1. #1
    What's Jailbreak?
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    Default Upgrade original iPhone (edge only) with 3GS from eBay
    Hello all,

    We have an old iPhone with the unlimited data plan. We are thinking of buying a 3GS and pop the old sim card in it. I know that AT&T knows when you are using an iPhone but will they also know that it was updated?

    Thanks,

    Jeannette

  2. #2
    Super Moderator Cer0's Avatar
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    Some people say that going from 2g unlimited and putting it in a newer iphone somehow tricks the system to give you 3g unlimited still.

  3. #3
    iPhoneaholic
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    If you have an unlimited plan you are grandfathered in to the unlimited plan as long as you have an iphone, no matter how many times you upgrade.

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