I agree with the ACCC that there is definately a possibility this could happen, but at least one telco (the one I work for) is behaving itself and offering generous plans with free data for the first few months to avoid any possibility of bill shock. I don't know where the ACCC get their info, but I doubt many of our customers will have 'bill shock'.
See;
"ACCC warns about iPhone bill costs, additional charges"
and also;
"ACCC warns 'iPhoners' on bill shock"
Before we launched the iPhone (last weekend) I did some analysis examining early adopters of the 'old' 2G iPhone. A simple graph showing data usage of existing iPhone users gave us a rough idea of what the new 3G iPhone might require (assuming the new 3G iPhone and customers behave the same way...). The data was roughly something like this;
A proprtionally large number of early iPhone adopters were using 100mb or less a month, but small percentages of customers would use far more (actually going up to a few gb's).
Based off of this early analysis I'm guessing that the data included in the Optus iPhone plans should be sufficent for most new users of the 3G iPhone. We'll see...
