Smartphones and social media have become inseparable from young people's daily lives, serving as primary gateways to learning, entertainment and social interaction. But their benefits come with growing costs: addiction, anxiety, declining academic performance, cyberbullying and exposure to harmful content. Korea can no longer afford to ignore these risks. It is time to begin a serious discussion about introducing reasonable safeguards for minors' use of social media. Recent developments in the education sector underscore the growing urgency of the issue. Newly elected superintendents across the country have embraced "smartphone-free schools" as a key policy. Gyeonggi Province plans to restrict mobile phone use not only during classes but also throughout breaks and lunchtime, while Gangwon and North Jeolla provinces are rolling out smartphone-free school initiatives and digital detox programs. These are more than educational experiments. Schools have increasingly reported that excessive smartphone use disrupts learning, fuels conflicts among students and facilitates cyberbullying. Altho