Thinking ahead a year or two to having a teenager: My child is already in a small minority in not yet having their own smartphone, and since reading 'The Anxious Generation' by Jonathan Haidt, I'm minded to hold out against giving my child a smartphone until they can get one themselves, if they want to because the massive developmental opportunity costs were shocking when laid out so plainly.
If you have teenage children with a dumb phone or no personal phone at all, what are the worst negative impacts for your teen of not having a smartphone? Has your position on smartphones affected your relationship with your child? At what age / event do you intend to give your child a smartphone, if at all? What other factors should I consider in weighing up if / when to give them a smartphone?