The use of cell phones by community health workers and other medical practitioners in low-income countries has been promoted as a potential revolution for health systems development. This “mHealth” revolution has been seen as an opportunity to develop diagnostic, treatment and surveillance networks wirelessly, to build mobile apps allowing remote nurses and doctors to provide higher-quality care to rural patients even in places without a hospital or well-functioning health clinic. Several foundations are now offering grants to build and distribute phone applications that will offer everything from prescription drug advice to epidemic surveillance tools. But is mHealth really going to improve health outcomes? Or is it just another technological bomb thrown at poverty and poor infrastructure?
The theory
Globally, about 3.1 billion people used mobile phones in 2007; that’s nearly half the planet. The greatest growth during the last decade has occurred in Asia, the Middle East, and Africa. In many of these continents, mobile phone subscribers outnumber fixed-line telephone subscribers, particularly as countries leap-frog over the traditional development step of planting land-lines and rely instead on building wireless communication towers and Internet-based businesses.









