A couple of things from my side.
I don't work in a school but I do volunteer with teenagers, most of whom currently are of an age where they'd be affected by this ban.
We have informally chatted before about social media and what sort of content they end up consuming and actually I think many of the older teenagers are sensible enough to swipe away from the harmful content. Some of the content they do consume is really not my cup of tea, but only because I find it tacky or mind-numbing, not harmful per se.
These are a self-selecting group though - they've opted to be in our group doing the activities we do. Across the full spectrum of people their age I've no doubt there's harmful content. But I do believe it is possible and feasible to educate young people about harmful content and how to get it to stop showing up (as often, anyway) in social media feeds. I would prefer to be investing resources into this than trying to enforce frankly unworkable policies.
Specifically, last night I was at a meeting about running an event which would be between our group, and a different group of young people - so we would be, at times, having 10-17 years spending some free time together. The topic of mobile phones came up. In the end we agreed for this particular event to say no mobile phones during the day, as it would avoid the risk of say some 13 year olds hanging out with some 16 year olds and potentially viewing content not suitable for their age range. In the evening where the age ranges are separated, we would allow phones for the older group. I think this is a good compromise.
But more broadly I was making the point that, for the events we run for our group of teenagers, we don't normally ban phones. Three main reasons I would say. The first is that if we did, some feel such detachment that they'd probably start to try sneaking them in. We have a good level of trust between us but they are teenagers after all and I'm sure there will be a day where they'll push the boundary to sneak in a phone or alcohol or something else they're not allowed. I'd rather they're using them in the open than hiding them. The second is that they take better publicity photos for our group than the adults do because they capture 'in the moment' things and selfies etc! The third is that I've been doing this for many years now and I've yet to actually have a problem with mobile phone usage. I believe the reason for this is that we put together an engaging programme and because of this they're not constantly thinking about their phones. On events I do find they get on their phones while waiting for their food to go down, and if it's an overnighter then a short spell on them in the evening, but during the day I barely see them.
Again, they're a self-selecting group and if they didn't like our programme they would just leave the group, unlike school where a lot of teenagers are in a class whether they want to be or not. But even when I'm teaching ours a skill they don't particularly want to learn but is needed for something, making it as engaging as possible just removes a lot of this phone distraction.
As for pouches, I think I'd just find it a bit patronising. And like I said earlier up, if one device was banned they'd just bring another cheap one off Amazon. I'm not going to start searching their kit for contraband.
I guess this is a bit of a tangent from specifically social media, but I do think they're quite closely related, as social media use is such a huge part of what teenagers do on their phones. More so than games etc.
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The second thing is the Lords have given their initial green light to blocking VPNs for under 18s:
https://www.techradar.com/vpn/vpn-p...ine-safety-consultation-as-lords-vote-for-ban
So this slippery slope continues to get greased, and the cat-and-mouse game of the legislature versus tech savvy teens wanting to use Instagram seems well underway.