Canada

In my experience, kids who want to be distracted will find a way to do it. I've been in classrooms (as an adult) where phones and computers weren't allowed. Most notably, I've observed a grade 7 class where with their social studies teacher, they weren't allowed technology in the classroom, but with their math teacher, they were. There was not a different level of distraction between the two classrooms. The only difference was in the way kids chose to spend their time instead of working. In the room without technology, they would sit and stare off into space and not work, or distract their neighbour with a conversation, or doodle instead of doing their work. In the room with technology, they'd play a scratch game on their computer, or do work for a different class on Google Classroom (because that's what they felt like working on at the moment, although they weren't supposed to be), or doodle in Paint, or text a friend. However, through my observations of both classrooms, neither one of them had more distracted kids. The distraction was just different.

Maybe other people have different experiences in other classrooms, but my observations here have been pretty consistent across every classroom I've been in (and it's been a lot of classrooms, because it's part of my practicum to get my teaching degree). Teaching kids about respectful technology use and when it's appropriate to use their phones as a tool in the classroom seems far more beneficial to me than just banning phones.