Mobile Phone Signal Jammer can not only realize mobile phone interference, but also add interference modules of different frequencies to interfere with wireless signals of other frequency bands. Wireless signal can realize different functions according to its frequency. It is used in different places. Common wireless signals include GPS signal, interphone signal, WiFi signal, mobile phone signal and so on. The signal frequencies that mobile phones can use range from 700m to 6000m, including 2G to 5g signals, WiFi signals, GPS signals, etc. according to the different signal frequencies, they are divided into various uses, and the functions they achieve are also different.

The interference range of mobile phone signal jammer is also different for calls of different frequencies. In the same test environment, the mobile phone signal strength of each frequency band is also very different. According to different operators, the mobile phone can receive mobile phone signals of multiple frequency bands at the same time. At this time, in order to ensure that the mobile phone can use the mobile phone to make calls and send and receive text messages at a minimum, so as to keep the mobile phone unblocked in case of emergency. In some places where telephone jammers are used, such as close to the base station, or indoor signal amplifiers are installed in the building, at this time, the mobile phone signal strength of some frequency bands must be relatively strong. If the shielding effect of the mobile phone jammer is to be guaranteed in such places, it is necessary to test the frequency band of the strongest mobile phone signal on site, and then adjust the interference module of the telephone jammer or the signal source providing the mobile phone signal, So as to improve the transmission power of the mobile phone signal jammer, or reduce the signal strength of the signal source, so that the mobile phone frequency band with the strongest field signal can be covered. In this case, the interference range of the mobile phone jammer can be guaranteed.