Mobile phones are one of the ICT tools available nowadays that can assist students in studying English. Students have access to a variety of English resources and information every day with the features, applications, and internet connection. The limited amount of time given for English instruction in the classroom can often make it difficult for students to learn the English language. Therefore, the important facility to support students’ learning is learning media, and mobile phone can be a learning media or tool for students. Mobile phones offer a variety of activities for English language learners. After learning English in a classroom, students can monitor their own learning activities independently with the help of mobile phone media. Additionally, students can assess their progress in learning English alone or with friends. The objective of the study is to describe students’ perception of using mobile phone for their self-directed English learning outside of classroom. For research design, the present study is used qualitative method. The instrument used to collect data is questionnaire and interview. The participants are one class of eleventh grade of SMKN 3 Malang. The total number of participants is 34 students of tata kecantikan, which selected to participate in this study, and 5 students are chosen randomly to be interviewed. The finding indicated that students perception of self-directed English learning using mobile phone in terms of personalization is to support the students to learn English anytime and anywhere, the aunthenticity facilitated the students to access the authentic learning media, lastly for connectivity mobile phone can improve students’ relatitionship with others while learning English. Regarding the study's findings, it is directed at next researchers to expand the current study. Future researchers may examine how students’ perception of using a mobile phone for self-directed English learning outside of the classroom by utilizing various study design and skills or components, in particular. Key Word: Mobile Phone, Perception, Self-Directed Learning