Ahead of the impending launch of the iPhone 5, the strategic importance of the iPhone to Apple is nicely illustrated in this analysis on CNN Money.
CNN compare the revenues generated by the iPhone compared with the whole of Microsoft. In the year to June 2012, iPhone revenues were $74.3bn. compared with $73.0bn achieved in total by Microsoft.
The analysis also shows how the iPhone has become the most significant generator of revenues for Apple compared with all the other components of its product portfolio. It raises an interesting question which students might consider - is Apple becoming too reliant on the iPhone?