Given that no all new mobile telecommunications technology are accepted by the mass market, this study aims to understand the mass adoption of third-generation (3G) mobile phones that is hypothesized to comprise three consumer perceptions: new technology, new service, and new handset. Based on the theoretical framework of a consumer's decision making process. an empirical study of the mass adoption of 3G mobile phones in Taiwan was conducted. This study demonstrated that perceived utility of a new mobile service was a key factor that resulted in mass adoption. Further, it was found that perceived utility of a new handset directly stimulate consumers to purchase 3G mobile phones. Perceived risk and perceived expense are not negatively correlated with intentions as hypothesized: Moreover, perceived no need was another key factor that inhibited adoption and purchase intention. (C) 2009 Elsevier Ltd. All rights reserved.