Excessive mobile device usage affects various age groups differently. Teenagers and children may develop issues due to prolonged gaming, social media overuse, or lack of supervision, while adults often experience strain from extended work-related screen time or digital addiction. Poor posture, blue light exposure, and the constant bombardment of notifications can impact physical and mental health. Over time, these habits may lead to reduced focus, productivity, increased anxiety, and stress, ultimately disrupting daily life and social interactions.