The presenter proposes a preliminary guide on using the LINE application as a viable and effective supplementary tool for learning English in the language classroom. The underlying reasons for the effectiveness of LINE are its availability, ease of use, and communicative features such as sending messages, group chat, and video calling. We will discuss how LINE can be used as a learning management system, lecture tool, and as a way to facilitate English activities for different learner types and ability levels. Several example activities that cover all four skills ( speaking, listening, writing, reading ) will be presented along with their implications for the wired or tech classroom.