Although the study in If behavior field has recently increased, only few studies have focused on the moderating effect of adopter type on the post adoption behavior The purpose of this study is to verify the post-adoption behavior depending on adopter types in the mobile Internet domains. This study proposed a post adoption model based on prior continuance model. This theoretical model was verified empirically by conducting web surveys and multi group analysis. Based on the survey data, we classified users into continuer and discontinuer. This paper ends with theoretical and managerial implications of the study results, as well as limitations and future research directions.