Introducing smartphones to children at an early age often leads to harmful effects on their mental, physical, academic, and social development. Excessive screen time contributes to anxiety, poor sleep, reduced physical activity, and declining academic focus, while also limiting healthy face-to-face social interaction. Traditional parental controls are often ineffective and can create conflict without addressing the root causes of phone overuse. There is a growing need for innovative solutions—such as AI companions—that can support children emotionally, promote healthier digital habits, and help them build a balanced relationship with technology.