Do I need to unlock my iPhone 2G to use an iPhone 3G Sim?

Discussion in 'iPhone Tips, Help and Troubleshooting' started by implus, Jun 19, 2010.

  1. implus macrumors newbie

    Joined:
    Jun 19, 2010
    #1
    Do I need to unlock my iPhone 2G to use an iPhone 3G Sim?

    Noobish question I know, but better safe than sorry!

    I have a jailbroken iPhone 2G locked to O2 and am contemplating on buying an unactivated iPhone 3G Sim for the O2 12 month free Web & WiFi bolt-on.

    Would I need to unlock my iPhone to be able to use the 3G sim?

    Also if so, is it possible to unlock the iPhone after the jailbreak or would I need to restore the iPhone and jailbreak again but this time with the unlock function.

    Thanks.
     
  2. implus thread starter macrumors newbie

    Joined:
    Jun 19, 2010
  3. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #3
    No, if its locked to 02 you can use any of their simcards and they will work.
    Obviously you wont get 3G service with the 2G iphone, just edge.
     

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