Have you heard of a signal jammer ? Disconnect the phone from the communication. Discontinued devices prevent the signal transmission between the mobile phone and the base station, causing strong interference to the communication between the caller and the receiver. Effectively prevent signal transmission including GSM, CDMA, 3G, 4G, 5G, GPS, WIFI, etc. We cannot make or answer calls. In addition to improper use, it may also cause more problems.
Mobile phone calls operate in different frequency bands in different countries. Asia and other regions tend to use the GSM900 and 1800 frequency bands. The United States uses the 850 and 1900 MHz frequency bands. Using different frequencies makes it difficult to interfere with all frequencies. Depending on the frequency to be cut off, proper Signal jamming device is important. Cell phones were blocked in theaters and commuter trains. Movie theaters and libraries use these products. I am quiet and studying.
With the permission of the government, the interference can be placed in public places such as theaters and concert halls. However, such equipment violates personal freedom. It has been determined that this may affect public safety. The sale of jammers is expanding the business to all parts of the world. Sometimes you forget to hang up your phone. For many people, mobile phones are essential. When cell phones are annoying, it is very common to interfere with cell phone signals.