EFL learners’ public speaking is commonly influenced by cognitive factors like proficiency level, affective factors like anxiety and motivation, and environmental factors like class sizes and time constraints. Yet, recent developments in technology, including Artificial Intelligence, Automatic Speech Analysis, and Virtual Reality, may enhance language learning by offering accessible and personalized learning experiences. This study proposes an approach, Technology Enhanced Socio-cognitive Teaching (TEST), on improving public speaking skills of Taiwanese EFL learners. Twenty-five sophomore English majors participated in the study, taking a one-semester speaking class, using theme-based mobile applications to facilitate speaking practices, and interacting with each other through apps. Quantitative results show that students’ anxiety level dropped and the technology acceptance level went up. Qualitative surveys indicate a favorable attitude toward apps with an instant messaging function, highlighting the importance of social interaction in oral training. Findings confirm the positive effect of TEST on improving EFL learners’ public speaking.