Cellular phones have changed the way we live. A deeper understanding of how the attributes of these technologies influence end-users perceptions is an important issue. A better understanding of the cellular phone adoption and use process will inform our understanding of the diffusion process of other types of communication technologies. This empirical piece examines the influence of the Technology Characteristics, Group Characteristics (Familiarity), Mobility, Facilitating Conditions and Social Influence on the use of the cellular phones. Data were collected through a questionnaire survey from a final sample of 277 cellular phone users in Quebec (Canada). The results suggest that, among the factors mentioned, only Mobility has a direct on the adoption on all the three indicators of use defined in this study. These findings have theoretical and managerial implications which are highlighted.