Does it make sense to ban smartphones or their use by children from schools?

Not really! Prohibition rarely if ever works! Banning is a sign of cluelessness!

It is one thing to ban drugs, alcohol, and guns from schools, but smartphones?

There should be smarter ways to integrate smartphones, or other smart devices or even AI into curriculum of schools to benefit the students and their learning!

"A fast-growing network of American parents is seeking to curb the influence of smartphones and social media on their children’s health—and they are starting with schools.  

Bans and “bell-to-bell” policies: Much parent-led advocacy so far has focused on making schools smartphone-free environments. Once highly unpopular, such bans are quickly gaining traction:

74% of U.S. adults now support preventing students from using their phones during class, while 44% support all-day bans, per a Pew Research Center study from July.

37 states and D.C. have passed laws limiting classroom phone use, with about half passing all-day bans. ..."

Global Health NOW: U.S. FDA’s Slipshod Protection for Generics; Sierra Leone’s ‘Red Zone’; and The Push for Phone-Free Schools