Rumored: iPhone Unlocked for Kangaroo Land

We are a month or less away from the long waited for official announcement and full release of the next iPhone, the 3G version. According to a recent rumor, Australians will be able to buy unlocked iPhones from local Apple stores. Vodafone will offer plans designed for purchasing an iPhone but they won't be the only ones selling it. They won't even be the exclusive carrier for Kangaroo Land as local Telstra and Optus will be offering iPhone deals too.

What we don't know is whether the 3G iPhone will be unlocked too or just its predecessor? How much do I have to pay to buy one? (Plane ticket and travel plans to Australia not included of course)

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3G iPhone this June for Australia
Apple iPhone 3G by Mid-2008: Analysts