question about unlocking the iphone

Discussion in 'iPhone' started by alirichey89, Jul 24, 2008.

  1. alirichey89 macrumors newbie

    Jul 24, 2008
    Ok so I just bought the new iphone 3G and my sister wants my old iphone. I was just going to put her sim card into my old iphone but I don't know if AT&T will charge her for using the internet and stuff. What I want to know is if i unlock the phone with ziphone or something else if she can use my old iphone without additional charges?
  2. Tallest Skil macrumors P6

    Tallest Skil

    Aug 13, 2006
    1 Geostationary Tower Plaza
    You'll need to disallow data access to and from the SIM to prevent all data usage. This can be set up with the carrier.

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