In the present day, digital technology has become an integral component of adolescent life. Smartphones, social media sites, online gaming apps, and digital communication tools offer chances for social connection, amusement, and educational help. Teenagers use digital gadgets for self-expression, education, communication, and leisure. While there are many advantages to moderate technology use, undue reliance on digital gadgets has led to major psychological issues among teenagers. Constant use of cellphones and social media can result in digital reliance, which has a detrimental impact on social, emotional, and cognitive functioning. It explores how excessive smartphone usage, online gaming, and prolonged social media exposure contribute to mental health problems such as anxiety, depression, stress, loneliness, sleep disturbances, low self-esteem, and emotional instability. The study also discusses the influence of peer pressure, social comparison, online validation, and family environment on the development of digital addiction. Adolescents who spend excessive time online often experience poor academic performance, weakened interpersonal relationships, and reduced concentration. The paper further highlights the importance of psychological wellbeing during adolescence and emphasizes the need for balanced digital habits. Preventive strategies such as parental guidance, digital literacy education, counseling support, time management, and healthy lifestyle practices are discussed as effective ways to reduce digital dependency. The study concludes that digital technology itself is not harmful, but uncontrolled and excessive use can negatively affect adolescent mental health. Therefore, promoting responsible technology usage and creating awareness about digital wellbeing are essential for ensuring healthy emotional and psychological development among adolescents.