This thesis deals with the problem of credibility of communication via mobile devices, social networks and digital technologies. The diploma thesis presents the theoretical background of the research question and the results obtained on the basis of the conducted research that included the student population and the theoretical part that served as a starting point. The credibility of communication via mobile devices, social networks and digital technologies is a current and ubiquitous problem today, in which technology has reached a great level of progress. It can be assumed that today communication using digital technologies and the Internet takes place to the same extent as face-to-face communication. Therefore, it is necessary to investigate the perception and attitudes of the student population about the credibility of communication using digital technology. The diploma thesis also touches on the problem of excessive use of mobile devices and their influence on the way people communicate with each other today. The results of the aforementioned research show that the student population considers face-to-face communication a more credible type of communication, even though face-to-face communication is equally represented as communication via mobile devices, social networks and other digital technologies.