Trust is an core element in relationships. This dissertation proposes a model in which a multidimensional trust construct mediates consumer intention to purchase products and services using a mobile device. This study also analises impacts of product type on the proposed relations and compares three different models each one using an alternative representation of trust in order to expand academic knowledge regarding trusting relationships in mobile contexts. An online survey using social networks provided the data used in a structural equation modeling analysis. Results show that trust constructs should be multidimensional whenever trust is a construct of importance, that trust mediates the relationships between mobile devices innovative characteristics and adoption of mobile commerce, that search and experience products produce different effects, and that ease of use of mobile devices and vendor competence play important parts in the adoption and use of mobile commerce.