Because mobile phones are indispensable tools to teenagers, exposure to these devices could lead to addictive behavior with underlying social and psychological implications. Mobile addiction had been on the increase due to the usefulness and attractiveness of this device to teenagers in particular. More so, mobile addiction may affect the psychological, emotional, and social well-being of teenagers that could lead to deviant behavior. The focus of this research paper is to unravel the social psychological dimensions influencing mobile phone addiction and usage patterns amongst teenagers to check the excessiveness in mobile phone use. This current study is relevant due to the dearth of empirical studies on mobile phone addiction amongst teenagers in Nigeria’s Higher Institutions of Learning. More so, the literature has revealed that most of the research investigations on mobile phone addiction amongst youths emanate from countries outside Nigeria; therefore this study concentrates on the Nigerian environment and its peculiarities to teenagers. In view of this, the overall objective of this current study is to delve into social- psychological dimensions underlying mobile phone addiction and usage patterns amongst teenagers in Higher Institutions of Learning in Ilorin, Kwara State.