With the price of the 8GB iPhone dropping to $US399 ($AU483) overnight , how can anyone resist the temptation of buying one and hacking it to work in Australia? Here’s the step-by-step on how to get it working on any 2G mobile network in the world — including Optus, Telstra, Vodafone or Virgin Mobile in Australia. (The iPhone cannot be made to work on Three because it is a purely 3G network and the iPhone is 2G only.)
This tutorial uses the TurboSIM method and assumes you are on a Mac. There are various other approaches floating around other than what is described in this tutorial, but this is a compliation of the easy methods that worked for me. If you’ve got questions ask them in the comments and I’ll try my best to respond.
HOW TO: Hack the iPhone to work anywhere in the world — 10 step guide with pics | APC Magazine