ATT on Verizon 4S

Discussion in 'iPhone' started by grilledsteeze, Oct 16, 2011.

  1. grilledsteeze macrumors newbie

    Joined:
    Jul 5, 2011
    #1
    Is this possible? I thought all the phones had the capability to use both networks. When the ATT sim is in though it says incorrect SIM.
     
  2. Ikyo macrumors 6502

    Ikyo

    Joined:
    Feb 27, 2008
    #2
    There are a lot of posts about this already. The phone does support multiple bands, but it is locked only allowing Verizon and Vodaphone.
     
  3. grilledsteeze thread starter macrumors newbie

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    Jul 5, 2011
  4. grilledsteeze thread starter macrumors newbie

    Joined:
    Jul 5, 2011
  5. jav6454 macrumors P6

    jav6454

    Joined:
    Nov 14, 2007
    Location:
    1 Geostationary Tower Plaza
    #5
    Wait for the iPhone Dev Team first...
     
  6. DiamondMac macrumors 68040

    DiamondMac

    Joined:
    Aug 11, 2006
    Location:
    Washington, D.C.
    #6
    Would love to see this forum start to give warnings for not searching the forum
     
  7. grilledsteeze thread starter macrumors newbie

    Joined:
    Jul 5, 2011
    #7
    except that no string of search queries yields a thread similar to mine.. Sure plenty talk about unlocked SIM cards overseas and whatnot, but for the life of me I could not find one about using an ATT SIM in a Verizon 4S. It wasn't for lack of effort..
     
  8. b24pgg macrumors 65816

    Joined:
    Jan 28, 2009
    Location:
    CA
    #8
    Verizon's iPhone 4S can be unlocked but will only work with foreign SIMs.

    That means that AT&T and T-Mobile SIMs will not work even if the phone is unlocked; you can only roam on those networks with foreign SIMs.

    See this thread for more info.
     
  9. grilledsteeze thread starter macrumors newbie

    Joined:
    Jul 5, 2011
    #9
    I guess I'm just curious how they can lock a phone if they all ship from apple the same. Is is something in the BIOS? There can't be 3 different versions of iOS 5 for Sprint/Verizon/AT&T can there... anyway thanks for the help guys.
     
  10. b24pgg macrumors 65816

    Joined:
    Jan 28, 2009
    Location:
    CA
    #10
    They don't. Each carrier's iPhone 4S has a different model number:

    [​IMG]
     

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