Mobile education, comprising learning, teaching, and education related administrative services delivered via mobile technologies, has incited several projects and discussion in the last years. When reviewing these projects, it becomes apparent that most of them are technology driven, and only a few were formally evaluated at the end. However, certain lessons, chances and obstacles can be identified which may be helpful for further development in this sector. One critical issue is the distribution of costs for mobile services. As both educational institutions and students act on a limited budget, it is necessary to choose an infrastructure which meets the requirements of the users and addresses all relevant obstacles. Consequently, there is no single ideal technological alternative, but each project needs to make a situational choice.