A little while ago the World Bank, generally a rich-country club that doles out loans to the developing world, published an infographic looking at mobile phones and their presence in the developing world.
The piece supplemented a report and is rather large. It actually exists as two separate images. The cropping below focuses just on how people in the developing world use mobile phones. Overall the piece is a bit weak in terms of data visualisation types and some of it is a bit confusing, but the story is clearly worth telling. And fortunately there are more hits than misses.