Role of AI-Based Digital Wellbeing Tools in Reducing Smartphone Addiction Among Bangladeshi High School Students

The spread of low-cost smartphones and affordable mobile data across Bangladesh has fundamentally changed the daily lives and learning environments of secondary school students. While these devices provide excellent access to helpful educational resources, they have also caused a widespread increase in smartphone dependency. This paper investigates how common smartphone dependency is, how it affects school performance, and its related mental health consequences among high school students in Bangladesh. It also evaluates how smart, automated digital wellbeing tools could work as active solutions to help students manage their screen time. We collected primary data through a physical, paper-based survey from 265 high school students aged 14-16 across six popular secondary schools in Khulna city. The results show that 63.4% of the students spend more than four hours every day on their phones, mostly driven by social media networks (86.8%) and mobile games (61.1%). We found a clear negative connection between daily screen time and the students' ability to focus during study hours, with 75.1% of students reporting poor sleep quality and higher anxiety when separated from their devices. Current passive wellbeing features, like standard countdown timers, are not very effective because they require too much manual effort and lack intelligent adaptability. To address this, this paper proposes a new conceptual design called "FocusAI"—a smart, automated system that works directly on the device to help students stay productive. This study highlights the clear need to build intelligent habit-tracking systems to help teenagers develop healthier technology habits in a modernizing economy. Keywords: Smartphone Addiction, Digital Wellbeing, High School Students, Artificial Intelligence, FocusAI, Behavioral Modeling, Khulna, Bangladesh Education.