Present article addresses methodological and technical (instrumental) aspects of creation and implementation of mobile-assisted learning, which is oriented to the process of foreign languages learning. We provide the interpretation of the main definitions of mobile-assisted learning, as well as propose recommendations for using mobile devices in education for improving the language competence. In present article we note that the means of mobile communication possess a significant potential in the education process. We explore the perspectives of efficient implementation of mobile devices in foreign language teaching. We conducted the analysis of the capabilities of various modern program platforms and mobile devices. We present a practical argumentation for the efficiency of foreign language learning with the use of mobile (portative) devices and IT-devices with the implementation of Mobl21 platform in the process of mobile-assisted learning technology realization.