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  1.    #1  
    I've tried unlocking this Treo 600 a dozen times. I think the problem is I'm trying to unlock an already unlocked phone. What I really need is to make an ROW version of the device work in the USA.

  2. #2  
    If it is really unlocked, then you just need to stick a SIM card in, assuming that you're talking about a GSM model...
  3.    #3  
    Thanks Z,
    I've got the SIM card in, but still get the message that SIM not allowed.
  4. #4  
    That would mean that your phone is locked. Did you buy it as a ROW device, or did you upgrade it to ROW?

    (ROW) = non carrier specific model

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