Cell Phone use in Africa

Amina Harun, a 45-year-old farmer, used to traipse around for hours looking for a working pay phone on which to call the markets and find the best prices for her fruit. Then cell phones changed her life.

An industry that barely existed 10 years ago is now worth $25 billion, he says. Prepaid air minutes are the preferred means of usage and have created their own $2 billion-a-year industry of small-time vendors, the Celtel chief says. Air minutes have even become a form of currency, transactable from phone to phone by text message, he says.

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