The Handbook is designed to be a resource for both present and future language teachers to better understand how technologies can be used to capitalise upon the potential benefits that they bring, while at the same time being aware of the limitations. It seeks to maintain sufficient depth to be appropriate as a resource for postgraduate students, while at the same time providing a balanced perspective based on the individual authors’ experiences with mobile-assisted language learning. While it is not intended to be a “how-to” book, a practical tone should be adopted to allow readers to consider how the various technologies may be used in their own diverse settings. At the same time, it should be founded solidly on existing research and adopt a descriptive rather than a prescriptive perspective, providing suggestions as well as potential areas of concern in each of the topics covered.