On the market for an iPhone? Here's a breakdown of all the currently shipping iPhones from Apple.
Gartner: Apple To Double Its Market-share By 2011
Apple is challenging its competitors with software integration that provides ease of use and flexibility; continuous and more frequent innovation in hardware and software; and an ecosystem that focuses on interoperability across multiple devices (such as iPod and iMac cross-selling).
Gartner also predicts that by 2012, 50% of traveling workers will use devices other than notebooks. Gartner cites new "Internet-centric pocketable devices at the sub-$400 level" as a primary threat to the notebook in this arena. Notably, the iPhone fits this description.