SIM Cards

Discussion in 'iPhone' started by ppc_michael, Jun 26, 2007.

  1. ppc_michael Guest

    ppc_michael

    Joined:
    Apr 26, 2005
    Location:
    Los Angeles, CA
    #1
    Forgive me if this isn't the right forum, but it's tangentially related to the iPhone.

    I have Cingular/ATT, and the signal in my house is horrid. I usually can't place a call, and when I do, it gets dropped. My dad has Verizon and gets great service, but also a different phone model.

    I want to put my SIM card in his phone to see if I get better signal (to see if it's the service or the phone that's the problem) to see if I could even use my iPhone if I got one.

    Will putting my SIM card in a different make/model phone sold for use on a different network mess anything up? Or will things go smoothly? I just don't want to ruin his phone (or mine). Using my SIM card in his phone will make it use the ATT network, correct?
     
  2. EricNau Moderator emeritus

    EricNau

    Joined:
    Apr 27, 2005
    Location:
    San Francisco, CA
    #2
    Verizon phones are not compatible with SIM cards.
     
  3. ppc_michael thread starter Guest

    ppc_michael

    Joined:
    Apr 26, 2005
    Location:
    Los Angeles, CA
  4. cmschmidt macrumors 6502

    Joined:
    Jun 15, 2007
    #4
    correct. verizon uses a CDMA service while AT&T is GSM. if you opened up the verizon phone you would find there is no sim slot.
     
  5. EricNau Moderator emeritus

    EricNau

    Joined:
    Apr 27, 2005
    Location:
    San Francisco, CA
    #5
    Although, if both phones were GSM, your theory would be correct ...assuming neither of the phones had a SIM lock.
     

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