Problem: bullying. Cheap solution that won't work, but they need to do something: take children's phones away.
The first girl I "dated" I met in an AOL chat in the 90s where I did what was later called negging. Five years later, my friends were on AIM and torturing each other and everyone they could get the handles of.
A coworker recently told me her tween son had done the same to a classmate via Discord and whatever other socials kids use today, and unlike, or because of, how we grew up, his teachers were aware of it and called his parents. He spent the summer without Internet doing volunteer work until everyone was satisfied, and he's improved because of it.
I don't believe in ubiquitous surveillance, but with the connectivity available today, parents need more options to parent. I think there need to be more options for phones without cameras, more accessible management, and ways to limit that so that there's local privacy for developing people to explore their personhood. Taking phones away isn't a bad way to start until we have that option.