How does this work ??

Discussion in 'iPhone' started by yv.haranath, Mar 27, 2010.

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  1. yv.haranath, Mar 27, 2010

    yv.haranath macrumors member

    Joined:
    Jul 13, 2009
    #1
    Recently i bought iphone 3gs from craigslist, it has os 3.1.3 and base band 5.12.01.

    I searched and found their is no unlock for the baseband 5.12.01 for iphone 3gs.

    But when i put my old ATT sim card (which doesnot have data plan) , it works...

    why is that ?

    Can it even work for T mobile ?
     
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  2. r.j.s, Mar 27, 2010

    r.j.s Moderator emeritus

    r.j.s

    Joined:
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    Location:
    Texas
    #2
    It works for AT&T because it is locked to AT&T. :confused:
     
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  3. fireshot91, Mar 27, 2010

    fireshot91 macrumors 601

    fireshot91

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    Northern VA
    #3
    AT&T activated SIM cards will work.

    Even if it doesn't have a data plan (But isn't blocked), it'll work, and everytime it uses data, it will add up and charge you (Which is very expensive).


    Might as well get a data plan..
     
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  4. yv.haranath, Mar 27, 2010

    yv.haranath thread starter macrumors member

    Joined:
    Jul 13, 2009
    #4
    i got it......it works even i dont have data plan.....umm...weird..


    but if u you put any sim in iphone 3gs with 3.1.2 will not work unless u register with ATT for data plan ??

    And if i jailbreak and unlock right then i wont be able to use data plan and wont get charged right ??

    thanks all....
     
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  5. Applejuiced, Mar 28, 2010

    Applejuiced macrumors Westmere

    Applejuiced

    Joined:
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    Location:
    At the iPhone hacks section.
    #5
    Once the iphone its activated with an official AT&T sim it will work no matter what ATT simcard you stick in.
     
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