With their growing popularity, mobile technologies can be seen as having the capacity to enhance language learning by offering learners a flexible and dynamic learning environment that is not limited by time or location. The main objective of this study is to explore the potential benefits and implications of incorporating mobile technologies as an integral part of blended learning in language classes. In this context, this study investigates the use of a well-known Web 2.0 tool, namely Voki, to explore its impacts on high school students' English speaking skill and their perceptions in blended learning environments. The findings indicate that Voki provides a fun and motivating platform for students to practice their speaking and can significantly increase their speaking skill. In addition, students who participated in English classes incorporating Voki found it beneficial, leading to positive outcomes in terms of their speaking performance. By purposefully integrating mobile technologies into language learning, educators can harness their full potential and enhance the learning experience for students. On the whole, integrating a Web 2.0 tool like Voki with its multimedia features can be a valuable educational resource to improve English speaking skills in blended language classes.