In just the past decade, it is hard to underestimate the explosive impact in Africa of the mobile phone. The tiny device has already transformed finance (with e-payments), unlocked business networks (through chat groups), and opened marketing opportunities (fishermen can decide when and where to sell their catch). Now old Nokias are graduating into smart phones. In 2030, Africa will become the most digitalized continent with the highest youth population. Bruno Mettling, President of the phone company Orange Middle East & Africa, sees some of the opportunities. His book, Booming Africa, envisions an emerging continent transformed and empowered by what…