Can I use a verizon sim card in an unlocked at&t iphone 4

Discussion in 'iPhone' started by davejane, Nov 5, 2012.

  1. davejane macrumors newbie

    Joined:
    Nov 5, 2012
    #1
    I've been given an iPhone 4 from a relative. He told me AT&T unlocked it, and I called them and they confirmed it was unlocked.

    I reset it to factory settings, put in my Verizon sim card from another iPhone and it still says No Service

    Is it possible to use a Verizon sim in an unlocked ATT phone?
     
  2. TouchArchive macrumors member

    TouchArchive

    Joined:
    Sep 24, 2012
    Location:
    IL
    #2
    No,this is another cellular chip
     
  3. tymaster50 macrumors 68030

    tymaster50

    Joined:
    Oct 3, 2012
    Location:
    New Jersey
  4. davejane thread starter macrumors newbie

    Joined:
    Nov 5, 2012
    #4
    So does this mean unlocked ATT phones can only be used with ATT sims?
     
  5. dagored macrumors 65816

    Joined:
    Sep 18, 2007
    Location:
    Florida
    #5
    Most any GSM network, not CDMA.
     

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