The study examined dependency, satisfaction, and psychosocial characteristics as correlates of cell phone use by library and information science (LIS) undergraduate students. Using survey, 253 undergraduates represent the sample for the study. Five research questions were developed and answered. The results of the psychosocial characteristics' correlation with the cell phone use reveal that self-efficacy had the highest correlation with the cell phones use (r = 0.74), followed by self-esteem (r = 0.69), entertainment (r = 0.37), and social interaction (r = 0.33). Anxiety had the lowest correlation (r = 0.23), but still correlates positively with LIS students' cell phones use. Self-efficacy contributed most to the prediction of LIS students' cell phone use (Beta value = 0.299), followed in declining order of strength by dependency (Beta = 0.292), self-esteem (Beta = 0.182), satisfaction (Beta = 0.177), social interaction (Beta = 0.111), and entertainment (Beta = 0.106).