“The average American teenager who uses a smart phone receives her first phone at age 10 and spends over 4.5 hours a day on it (excluding texting and talking). 78% of teens check their phones at least hourly and 50% report feeling ‘addicted’ to their phones. It would defy common sense to argue that this level of usage, by children whose brains are still developing, is not having at least some impact, or that the maker of such a powerful product has no role to play in helping parents to ensure it is being used optimally. It is also no secret that social media sites and applications for which the iPhone and iPad are a primary gateway are usually designed to be as addictive and time-consuming as possible, as many of their original creators have publicly acknowledged.”
https://thefederalist.com/2018/01/10/apple-facebook-arent-going-save-us-smartphone-addiction/