@cardibach There are secondary schools that do this already so it's obviously logistically possible.
I support the banning of phones completely in school. It gives children a good solid long break from their phones, reduces bullying, helps ensure that they can concentrate on their eduction and encourages children to be present. Children should also not be in fear of being photographed at school and having that uploaded to social media.
And if it were possible a ban on social media for all under 16s. It's a bloody scourge in society and completely unnecessary. It fuels bullying, addictive behaviour, poor mental health, and is effectively giving a while generation of children difficult with attention and concentration. It's a public health emergency and something drastic needs to be done about it.
I also think that the "attention" model that these companies use should be outlawed, in the same way that other things that are bad for you are outlawed or made harder to obtain. If they cant do this, the companies won't be able to make their apps addictive in order to make money. The algorithms and other tactics they use to draw you in and keep you there won't be able to be used. This will fundamentally change how they work and they'll probably have to move to a subscription based model which would make than much less accessible to younger people and much less attractive generally. No one should be making money by surreptitiously drawing in and holding your attention for hours at a time, let alone children.