Palmtop electronic devices such as Smartphones create innovative and omnipresent language contexts. Development of mobile systems and Internet access has been made feasible more sophisticated applications which allow the use of world wide databases and interactive web content. The pervasive use of these devices instigates researchers to seek the potential applications of these modern tools in educational settings; therefore, this study investigated the impact of creative interaction in social networks on learners' vocabulary knowledge in Online Mobile Language Learning (OMLL) course. The participants of the study were 90 learners and the instruments and materials that were employed in the study were WhatsApp Application, GRE vocabulary mobile application, Researchers-made vocabulary pretest and posttest, and a semi-structured interview. The findings of both quantitative and qualitative data discussed the ways in which new technologies established authentic and effective interaction between human and computer in learning contexts as well as challenges that developing countries are faced with in conducting OMLL courses.