In a few short weeks, the iPhone 5 should be upon us. One of the interesting metrics that has been talked about of the iPhone is how all new models effectively outsell the cumulative total of prior models. For example, the iPhone 4 sold more than the total of all original iPhone, 3G, and 3G models.
So far the iPhone 4S has not yet reached this goal, but it will by the time next quarter’s results are reported. By my estimate, after 3 quarters of sales, Apple has sold about 83 million of the iPhone 4S compared to 88 million of the iPhone 4.
Here’s a chart showing how many of each iPhone model Apple has sold to date. The totals add up to Apple’s reported numbers, but the splits are based on an educated guess. My assumption is that when a new model is released, the vast majority of shipments are for the new model. Not really rocket science.