Thanks again for the replies guys.
Ryan, those are some great points. Companies in the United States will start to open up to using the iPhone, and employee sales will boom.
I agree that countries around the world will buy iPhones like crazy

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I would say 10 million by the end of year is a bit much, because it will take a bit for the idea to settle into other other countries. My guess is that 12 million will be sold by July 11th, 2009.
It's time for some math. 12 million over a year would be 32,876 a day or so, and I am assuming that about 65% of daily sales will be in the United States, so that would be 21,369 per day in the United States.
This to me seems like a pretty high number, but considering how many people switch phones every day, and considering how many people will be at the many stores across the nations, it may not be so unreasonable. I will figure some other numbers out later and edit this post

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