In Sweden there is a long ongoing discussion about computer and cellphone usage during lectures in school. The discussion has mainly covered elementary school up to college students, but this topic is at least as relevant for university students. Today cellphones are so advanced; you can do everything with one that you previously only could do with a computer, the difference is that everyone is carrying one with them all the time. This study shows how concentration during lectures is affected by the cellphone accessibility and usage. With this study we want to find out how university students perceive cellphone usage affects their own concentration during lectures. Our goal with this paper is to enlighten both teachers and students about cellphone usage, and give them suggestions on how lectures possibly can be improved. The research question in this study is: In what way do university students believe their cellphone usage affects their concentration capabilities during lectures? The data we have collected is compiled from three surveys from three different universities in Stockholm. We have also interviewed students in a group interview and one individual interview. The results show that the students are affected negatively to some degree by their cellphone usage during lectures. But the level of concentration is also affected by the subject of the lecture, level of difficulty and the teacher’s way of lecturing.