The Benefits of Mobile Health, on Hold

opinionator.blogs.nytimes.com - March 13th, 2011 - Tina Rosenberg

The world now has 5 billion mobile phones – one for every person over 15.  Africa has a billion people and 750 million phones, and mobile is growing so fast there that in a few years there will be more phones than people.   In some countries this is already true — South Africa has 47 million people, but 52 million SIM cards.

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