The research of the behavior of using smart phones to support student’s learning of students from Rajamangala University of Technology Isan, Nakhonratchasima. The purpose of the research studies the behavior of using smart phones to support their learning. The group example are 381 students from 4 faculties ; Faculty of Business Administration, Faculty of Science and Liberal Arts, Faculty of Engineering and Architecture and Faculty of Fine Art and Industrial Design. The instrument use a simple sampling from questionnaire. The statistic of analysis are percentage, statistic frequency and the average