“In 2009, Apple sold more iPhones than it did in 2007 and 2008 combined. In 2010, Apple sold more iPhones than it did in 2007, 2008, and 2009 combined. Last year, Apple sold 93.1 million iPhones, slightly more than it did in in 2007, 2008, 2009, and 2010 combined. The pattern continued.”

– Takeaways from Apple’s (Q4) 2011 – Matt Richman.

That is an incredible stat. I think it shows the increasing demand for the iPhone as well as the exponential growth of users switching from simple mobile phones to smartphones.