Over the past decade, the global spread of mobile devices and specific applications have boosted the interest in user experience (UX) evaluation. Most existing models, designed for stable systems, do not fully address the fragmented, variable, and routine-embedded nature of mobile interactions. To address this gap, this paper proposes a new model that extend and adapt CUE framework to the specificities of mobile interactions. Its novelty lies in integrating product, user, and context characteristics to explain their causal roles in shaping perceptions, satisfaction, attachment, and behavioral intentions. The model also introduces a longitudinal perspective. It can thus be observed how user experience shifts from the initial familiarization and exploration to dependence and loyalty. This model thus provides a practical base for empirical research, guiding future longitudinal studies and offering a contribution to mobile-specific evaluation tools.