The mobile phone forms part of a teenager’s life world and reality today and can be regarded as a tool with which they not only communicate, but also use them to gain access to the Internet, social media and social networking sites. The primary aim of this study was to determine if the mobile phone, with all its functionalities, has an impact on the development of the adolescent’s identity formation, social development and communication skills as well as the sense of the self. Another objective of this study was to determine what the opinions and perceptions are of older generations with regard to mobile practices of the youth. A concurrent triangulation mixed method design was utilised for the purpose of the study. The quantitative and qualitative studies were conducted simultaneously and the data and results from each method were integrated and interpreted as a whole. The quantitative data gathering method was short self-structured questionnaires that were completed by learners (190), teachers (35) and parents (21) to provide a general overview of mobile usage among adolescents. A single-group pre-test post-test experimental design and individual interviews were conducted with eight volunteers. Lastly, 12 learners took part in a focus group interview as a confirmation technique for all the information that was gathered. The findings of the empirical investigation revealed that the mobile phone is used nowadays as a social tool, a planning tool and a convenience tool. The constant connectedness the mobile phone provides, strengthens the adolescents’ self-esteem and self-confidence and contributes strongly to their self-worth. The mobile phone is used as a self-expressive personalised tool and forms part of the sense of the adolescent self. It was also found that adolescents build their relationships with others on a two-dimensional platform that involves online and offline communication and activities. A definite gap exists between older generations’ perceptions and adolescents in connection with the ways that adolescents use their mobile phones nowadays. Parents and teachers have to accept the fact that technology forms part of today’s youth and they should change their mind-sets with regard to this complicated and complex phenomenon. / Psychology of Education / D. Ed. (Psychology of Education)