The document summarizes four EU-funded projects conducted by NKI Distance Education/Norwegian School of Information Technology from 2001-2008 exploring mobile learning. The projects aimed to extend flexibility of distance education by making course materials and communication accessible on mobile devices. Testing showed that mobile access increased flexibility for students to study anywhere. While graphical materials were difficult on small screens, interaction and communication generally worked well on both mobile and standard technology. Mobile learning was found to enhance accessibility and flexibility for distance learners.