Mobile learning, if considered in its most enthusiastic versions, promises to transform the world of learning. It seems that mobile devices will lead to overcome the narrow limits of the classroom to achieve ubiquitous learning. But if we analyze critically the promise of the everywhere, anytime, suspending judgment on its feasibility, interesting pedagogical issues arise: the relationship, on the one hand between formal and informal dimensions of learning and, on the other hand, between learning and information. [For the full proceedings, see ED571335.]