Teachers are spending enormous amounts of classroom energy policing cell phones - I'm wondering what others have seen as solutions in their local area schools?
So the only way that I see is to make an honest connection with the students on a human level. This means they will probably keep the disruption to a minimum because they either want to learn, or because they at least do not want to interrupt the learning of others too much.
It's not easy, but teaching well never is, and of course it is highly dependent on the students.
The ones not paying attention will likely not perform well but, wouldn’t a lesson be thought to them when some realize that using the phone in the class leads to poor results.
Like I said, I am not a teacher, so my comment might be full of flaws.