The adoption of the mobile phone by young people has been a global phenomenon in recent years. It is now an integral part of adolescents’ daily lives and is for the majority, the most popular form of electronic communication. In fact, the mobile phone has turned from a technological tool to a social tool. This paper explores the impact of the mobile phone on youth peer relationships, on family relationships and on the institution of the school. Young people use the mobile phone in positive ways to organise and maintain their social networks. However, there are also negative impacts on young peoples’ peer relationships. These can include ostracism and cyber bullying. Similarly, the mobile phone has lead to changed dynamics in the family, with issues of safety and surveillance from a parental perspective leading to negotiated changing freedoms for young people. While functional coordination can be beneficial for the family, other problems can arise such as financial difficulties, non-custodial parent access, as well as over reliance on the mobile phone for safety issues and intrusion into young peoples’ lives. The impact of the mobile phone on the school as an institution has not however, received as much research. Disruptions to lessons, incidences of cheating and bullying are some of the negative impacts, while texting parents of truants seems to be the only positive for the school. Further research is needed into the consequences of mobilephone use in schools.