At&T sim cards
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Thread: At&T sim cards

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    At&T sim cards

    Can someone explain why AT&T locks sim cards?

    I bought a used cell phone(s/n checks out) but the sim card is locked. So if I understood the rep on the phone I have to go in to store and get a new card? huh? With Verizon you just called in with the s/n and wazzam phone is up and running.

    On a side note for anyone that's ditched the land line...any regrets? This phone is a replacement to the land line for us. I'm sick of paying $50/month for a phone we don't use.


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    Re: At&T sim cards

    They probably associate SIM cards with the account. That seems perfectly reasonable.

    Verizon doesn't have SIM cards since they are CDMA. Only GSM providers have SIM cards.

    Personally, I prefer the GSM model. You can just pop your SIM card out of one phone and put it in another and you're off and running. With CDMA, you have to have the provider re-associate the phone's ESN with the account and then re-provision it.


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    Re: At&T sim cards

    Quote Originally Posted by jumbopackage View Post
    They probably associate SIM cards with the account. That seems perfectly reasonable.

    Verizon doesn't have SIM cards since they are CDMA. Only GSM providers have SIM cards.

    Personally, I prefer the GSM model. You can just pop your SIM card out of one phone and put it in another and you're off and running. With CDMA, you have to have the provider re-associate the phone's ESN with the account and then re-provision it.
    Ah so technically the SIM card is tied to the old phone number?

    Now I remember too...when I activated my iPhone(used) he swapped out a card in it.


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    Re: At&T sim cards

    Quote Originally Posted by BigBake View Post
    Ah so technically the SIM card is tied to the old phone number?

    Now I remember too...when I activated my iPhone(used) he swapped out a card in it.
    Most likely.

    I'm not a customer, but I'd imagine that's what they would do. The SIM card is what matters, not really what the SIM card is in.


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    Re: At&T sim cards

    just to the network, not to the phone, It works only for the network

    If you have two ATT phones you can switch the sim cards in the phones. They have to be ATT phones though.

    That is from an ATT Specialist



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