Apple has sold over 187 million iOS devices
Thanks to Apple's patent and trademark lawsuit against Samsung, we now get fresh iOS sales figures, a whopping 187 million of them including 108 million for iPhone, 19 million for iPad, and 60 million for the usually not broken-out iPod touch. These are as of March, 2011. (Figure a couple million in Apple
That's a compelling install base, a largely binary-compatible one, and the reason Apple's strategy lately has been more about platform than product.