WhatsApp is an accessible messaging application for smartphone, computer, and tablet. Other of purposed as communicating tool, WhatsApp has invaded all aspects of life, including education field. However, this application has not been utilized well by English teachers in teaching English language, whereas it is potential to facilitate both for English teachers and students.
This thesis discusses about the implementation of WhatsApp as popular application to facilitate students’ speaking skill by using voice note feature at the third grade of MTs NU 02 Al-Ma’arif Boja in the academic year of 2019/2020. The researcher designs the online conversation in which the atmosphere of direct conversation still exist by the use voice note. The data obtained shows that WhatsApp for online speaking class can build students’ confidence and motivation to use English beside it is interesting for their daily communication. Hence, WhatsApp can be utilized for language teaching, especially for speaking class.