640 Million: Number of iOS and Android Devices Used Worldwide

We had spotted multiple iOS stats and Android stats in the past, including how many ios devices have been sold. We spotted this today:

"Five years into the smart device growth curve, expansion of this new technology is rapidly expanding beyond early adopter markets such as such as North America and Western Europe, creating a true worldwide addressable market. Overall, Flurry estimates that there were over 640 million iOS and Android devices in use during the month of July 2012."

Statistics Source: Flurry