Studies show that mobile phones are an important part of youth lifestyle and culture. In establishing this, it is important to know how youth themselves perceive the importance of mobile phones in their life. Our research was based on a sample of 6th and 9th graders from Slovenia (n = 820). The data was collected using a questionnaire. The study showed that the most common reason for using mobile phones is to communicate with other pupils and the reason for having a mobile phone is to be connected with others. Moreover, various feelings and fears connected to mobile phone use are experienced by pupils. The study also revealed some possible dangers of MPs use by pupils. Based on the results, it is necessary to raise pupils’ awareness of the safe, moderate and critical use of mobile phones in their everyday life.