Mike Sharples, from Open University, talks about the challenge that is bridging the informal mobile-learning world with the pedagogical world inside the classroom. This interview as made during the UNESCO Symposium on Mobile Learning (UNESCO headquarters, 15-16 December 2011) The symposium was one of two main events taking place in the framework of the UNESCO Mobile Learning Week (MLW); the other event being an International Experts' Meeting to produce mobile learning policy guidelines and a strategy for teacher development based on mobile phones