A few meetings of the main listening class caused the lack for students to practice their listening skill. For new English students, listening skill is more difficult than other English skills. Listening needs more practice than one instance in hearing. The use of the tool in the process of teaching and learning listening skill is very necessary. The optimizing WhatsApp was carried out to give guidance for students to practice their listening skill and they did not only rely on the learning in the main class because the main listening class was carried out only three meetings for three months in Basic Training Class. The research aimed to find out Basic Training Class students’ perception on optimizing WhatsApp to support the main listening class. The researcher used descriptive qualitative research. The data collection technique was observation, interview and documentation. After analysing data, the researcher found that the optimizing of WhatsApp to support the main listening class gives the positive impact. It can be seen from the students’ perception. They are motivated and interested in practicing listening regularly, they don’t only rely on the learning in the classroom, and they can improve their listening skill.