>It's possible to use a smartphone without social media. It's possible to set up a child's smartphone in such a way that their access to social media is limited if not totally removed.

I would argue that it's very hard to limit access to the web versions of social media outlets.

I would also first broaden our terms a little, as it's not just social media that's so harmful, it's the wider attention economy. If we include that, it is practically impossible to own a smartphone without misusing it to your personal detriment.