A good start is to avoid giving them a smartphone until they're in high school. And once they have a smartphone require them to get permission from you before installing any social media apps, with consequences if they don't follow the rules (take the phone away). Make the consequences known up front, rather than reactive so they know the guidelines regarding their phone use. And whatever you do DO NOT give your chil…
I genuinely don't think the tech medium is the problem. There's good and educational software available on tablets just as there is on anything else. While I've always been anti-tablet myself, and anti-phone for similar reasons (though why a kid would need a phone is beyond me at this stage), there's programs for literacy and learning available on the tablets that work just fine, as well as art, creativity and painti…
All that being said we're somewhat liberal with TV, and we'll introduce them to a PC in time. But for now the MO is real world skills and intelligence.
Jonathan Haidt also pointed to evidence that technology during the adolescence phase can wreak havoc. Particularly handhelds and social media.