Adaptive services based on context-awareness are considered to be a precious benefit of mobile applications. Effective adaptations however, have to be based on critical context criteria. For example, presence and availability mechanisms enable the system to decide when the user is in a certain locale and whether the user is available to engage in certain actions. What is even more challenging is a personalization of the user interface to the interests and preferences of the individual user and the characteristics of the used end device. Multimedia personalization is concerned with the building of an adaptive multimedia system that can customize the representation of multimedia content to the needs of a user. Mobile multimedia personalization especially, is related with the particular features of mobile devices’ usage. In order to fully support customization processes, a personalization perspective is essential to classify the multimedia interface elements and to analyze their influence on the effectiveness of mobile applications.