I want to ban students from using mobile phones in class

I am a new teacher, because I have little experience, so the students do not fear me at all. There are always a lot of students in my class who use their phones, oh yeah, maybe they are using facebook and twitter.I want to change that. Is there a good way to make them unable to use their phones?

Hey, man. Since you are a teacher, you should have learned about signals and radio waves in physics class, which is a very easy thing to solve, we just need to make the cell phone signal blocked or covered.In other words, all someone needs is a device that can jam a cellphone signal. There are already devices called cell phone jammer that can solve your problems.All you have to do is turn on the device and no one in your class has a cell phone signal anymore

I want to ban students from using mobile phones in class

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