In many places where silence is required most of the time, using a cell phone can cause noise problems. Such venues include but are not limited to lecture halls, theatres, school examination rooms, courts, libraries, cinemas, hospitals, etc. Think about it, if you're watching an exciting concert, do you like the phone ringing next to you? Now we can conclude that the use of mobile phones should be restricted in certain public places. The next question is how do we protect the silence in…

There are various cell phone spying devices in our life, more and more people are used to spying on us, so we need a wireless cell phone jammer. In some cases, this electronic espionage device can put us at risk. Among them, the most dangerous equipment is the cordless telephone equipment. They are installed in various places, such as shopping malls, streets, supermarkets, bus stations, hospitals, restaurants, cinemas, libraries and other public places. Some of them may have been controlled…