While the explosive use of mobile phones in developing countries is well-documented -- and undeniable -- and evidence is emerging that phones are slowly making their way into the hands of teens, just what this might mean for the delivery of education in developing countries is a little less clear. This topic first started to get serious attention among small groups of people in international donor agencies around 2005, with a 'mobile learning' workshop in Tokyo sponsored by ADBI and UNESCO serving as a sort of landmark event for the topic. The workshop report (published as