The study of language learners’ motivation has long been seen as key factor that determine success in second language (L2) learning and befitting its central role, there is a growing body of research of mobile language learning (MLL) strives to sheds light on understanding its motivational dimension. Based on Self-Determination Theory (SDT) of motivation, the more intrinsic motivated learners are the better they engage in the activity. Learners may also show different orientations other than intrinsic (i.e., extrinsic), which vary greatly in the degree to which is self determined or controlled by the learner. To maintain and promote more self determined forms of motivation, SDT emphasises that learners need to feel autonomous, competent and connected with others inside and outside the class including the teacher. Nevertheless, the role of learners' motivational orientations in the MLL context has not been address thoroughly in the literature. Since authentic interaction in technology is vital for L2 learning, a social networking mobile application (i.e., WhatsApp) will be used in this study as an example of MLL implementation to explore how learners’ informal use of such application with their teacher can foster their motivation to learn an L2. A pre- and post-test will be administrated to identify any changes in motivation that attributed to the use of MLL implementation. This study may contribute to a greater recognition of the advantages and challenges of applying these devices in language learning context. This study
will also reveal the extent that language learners perceive and engage in MLL.