No, I just think that obviously there are a lot of people working there, a lot of really smart people, a lot of people in the world have one. Like cigarettes etc this would surely have been flagged and raised ages ago if it was actually dangerous. Sorry. Maybe I'm missing something.
@LadyJos , it's pretty well documented via interviews with Steve Jobs, Bill Gates, heavily restricting their children's access to the technology they created. You sound very trusting of big business but unfortunately they do not have your kids' interests at heart. They want to make money from them and if you think, the phone companies get huge amounts of information about your children, what they watch, what they buy, and they use that to market products to them. This includes deliberately addictive strategies (they have employed psychologists to help make phones and apps as addictive as possible) to make more money. All at the expense of your kids' mental heath.
Very akin to your example of tobacco. The tobacco companies knew that cigarettes were harmful and trying to cover this up long before bans came into place. They even used similar strategies of how to market to kids to get them hooked on brands early, using playful jingles etc. All this info is out there. Also about food companies too.
Big business wants money. Not heathy children.