Earlier quoted context omitted.
> The solution is parents using the parental control feature on their children’s devices. This is a stopgap at best, and to be blunt, it's naive. They can go on their friends' phones, or go to a shop and buy a cheap smartphone to circumvent the parental controls. If the internet is locked down, they'll use one of many "free" VPN services, or just go to school / library / a friend's place for unrestricted network acce…
In what universe do you live where children have enough disposable income to buy a smartphone ?
tl;dw it's quite capable for the money and would could easily get on social media apps/sites.