Article's aim is to create a parallel between the functionality and the dysfunctionality in the use of the smartphone to prevent abuse of the device. The increase in the frequency of use of the smartphone appears as a physiological reaction to technological progress but at the same time it seems to appear as a "paradox effect". On one hand, the presence of the smartphone improved human communication in distance and speed. It helped personal and relational growth. On other hand, it has made all personal data public, traceable at any time and in context, increasing the fragility of the human being. It becomes an effective stimulus to modify the relationships and biological balance of the human organism, but the abuse of the smartphone today leads to talk about addiction. It is important get to the bottom of to emerging data in the literature to prevent it.