Mobile devices are increasingly being used in classrooms and corporations as a means to deliver instructional content. Currently, there is limited research on how to best design and develop mobile based instruction. As a result, the purpose of this research study was to examine students' perceptions of designing and developing mobile-based instruction by a) interviewing instructional design graduate students in a computer based instruction course who were given the opportunity to construct mobile-based instruction and b) surveying instructional design graduate students to uncover their perceptions of mobile instruction design, usability, and delivery. Results of the survey and qualitative data analysis indicated that usability was a key issue on the mobile device. Users enjoyed quick access, good organization, user control, single column layouts, and large links/buttons. These findings contribute to the literature base on the design and development of mobile based instruction.