Portable 4-band mobile signal interference device using method demonstration. Detailed introduction of various use considerations
Cell phone signal disappeared during the exam
Received questions
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Recently, there is examination week in our school, it is very common thing, but one thing is different from previous years, during the examination period, if you are too close to the classroom, your mobile phone will lose signal, what is happening?
Second floor
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
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