Bill Gates restricts his children’s use of technology, prohibiting them from owning cellphones until age 14 and setting limits on screen time. He emphasizes the importance of preventing late-night screen use to ensure they get enough sleep and enforces rules like no cellphones at the table, except for educational purposes.
https://www.upworthy.com/bill-gates-explains-the-safest-age-to-give-a-kid-a-cellphone-rp