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Monday, 28 April 2008

How many people have a cellphone?

You may attribute this post to:

(i) this classic post by the Professor of Mobile Statistics Tomi Ahonen
(ii) recent pitches to financiers who still struggle with the concept that mobiles outnumber phones by 4 to1 and counting
(iii) a lull in proceedings on a Friday afternoon....

We began to wonder when the number of mobile phones in the world would reach a theoretical 100% penetration i.e. an average of 1 phone per person. We sharpened our pencils and put together PhoneCount which gives a good estimation of when this will happen.

An explanation of how the figure was derived is here. You may begin your protests now about any faultlines in the mathematics......

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