If I had a meeting or an outlet, I suddenly made a strange noise! "Piriri, Piriri, Piriri" screamed. Even during a play or concert, the ringtone of someone's smartphone suddenly rang and the air was frozen. GPS Interferer This kind of accident, which used to happen occasionally, has been worn out by this time. Many people think that this is the reason why the announcement "Please turn off your smartphone" comes in before the start.
Radiation propagation form of road electromagnetic waves According to the law of electromagnetic field, which is a medium, the disturbance energy emitted into the space around the wifi jammer is transmitted along the transmission. There is also that, but maybe it is the cause of the "jamming machine" installed in the theater. Mobile phones are convenient because you can receive calls anytime, anywhere. One is connected even when you want to be inadvertently not connected. Telephone jammers are said to be voyeur detector devices that promote themselves as mobile phones become more widespread.