Fear of missing out (FoMO) and the use of digital media among students Social networks and smartphones are part of our everyday life, they fit into our obligations, agreements, relationships and existence. At the same time, they leave different consequences on us, one of them is the fear of missing out. Fear of missing out is defined as a pervasive fear that others have a satisfying experience in which the individual does not participate (Przybylski, 2013). The construct of fear of missing out sets foundation for this research in which 314 (N=314) students from Zagreb and Split participated. The purpose of the research was to determine the attachment to smart phones and to examine the components of the fear of missing out among students. The research concluded that the participants most often use a smartphone and social networks to stay connected with others and communicate via instant messages, for which the Whatsapp application is mainly used. It was shown that, when the smartphone is not "at hand", it does not disturb them, but still there is a high probability that they will be use it while studying or listening to a lecture at college. Jealousy, fear, anger, sadness, anxiety and fatigue were not shown to be feelings that appear to students during the use of smartphones and social networks, and no statistically significant difference was found in the experience of the mentioned emotions during the use of smartphones considering the gender of the participants. The general goal of the research was the creation and validation of the Croatian version of the FoMO scale, which consists of three dimensions: the causes of the fear of missing out and the emotional and behavioral consequences of the fear of missing out. The created scale shows validity and reliability for further application in examining the causes, emotional and behavioral consequences of fear of missing out.