Over 1.6 billion have been sold. The total iOS products sold is over 2.2 billion of which 1.5 billion are still in use.
There are about 1 billion iPhone users.
Economically speaking, iPhone sales have reached one trillion dollars.
Since the iPhone launched, Apple’s sales have totaled $1.918 trillion.
Via Philippe J DEWOST
Finally the underlying maths on how half a billion pictures are taken everyday and automagically enhanced by imsense's eye-fidelity™ technology.