Jonathan Haidt is a social psychologist and author. His work focuses on how smartphones & social media affects people's minds, thoughts & mental health.
He recognises how difficult things are for parents and says the fundamentals are:
-No smartphone until they are 14.
-Smartphones to be banned in schools.
-No social media until the age of 16 with legislation to enforce this if possible.
- Give them more independence & freedom in the real world.
His experiments show that adopting these norms are the best way for parents to fight social addiction and give them back a normal childhood:
https://www.bbc.co.uk/iplayer/episod...ist-and-author