In the era of intelligent Internet, mobile phones have officially become "smart partners" in people's lives. We can not only watch videos and play games in our spare time, but also collect information at work, improve our work ability and work efficiency, and greatly optimize people's way of life. At the same time, mobile shopping and mobile payment are also very convenient for users. It can be said that the emergence of jammers has changed the lives of a generation.Although mobile communication has brought great convenience to our lives, due to the popularity of mobile phones, the loss of personal information will not only lead to frequent phone harassment and inability to rest, but also lead to a series of real estate fraud cases, resulting in the loss of wealth. I think many people have encountered or faced this situation, and even in some special occasions such as the examination room, it is necessary to avoid the occurrence of people using mobile phones to check, leak, and carry out sabotage through the mobile communication network. At this time, it is necessary to use wireless The method of interference to locally destroy the communication in the designated area, the cell phone signal jammer came into being.Let's first understand what is a cell phone signal jammer, also known as cell phone signal blocker, cell phone signal jammer, etc. Their working principle is to implement co-frequency electromagnetic interference on the wireless network on which mobile phone communication depends, so that the mobile network cannot communicate normally, so as to achieve the purpose of interference. The mobile phone signal blocker only blocks the mobile phone signal and will not affect the wifi blocker. It should be noted that in order to interfere with the mobile network by the jammer, it must be ensured that the signal field strength sent by the jammer is much larger than the field strength of the mobile signal BCH in the interference area. The closer the interference location is to the base station, the stronger the BCH field strength, which is effective. The interference area is also smaller.In the room where the signal jammer is installed, when using a mobile phone, you will find that there is no way to make a call, no way to answer, and no way to connect to the network, and naturally no way to receive information. In addition, the GPS signal jammer with Bluetooth function, then the Bluetooth function of the mobile phone can not be used. So, how do cell phone signal jammers interfere with the signal?The jammer does not really play the role of shielding. In principle, it mainly plays the role of influence, just like the electromagnetic interference in the movie. The data signal jammer works from the middle and low-end working frequency of the frequency band to the high-end scanner at a certain rate. This scanning can cause error code in the mobile phone receiving the message format data signal, so that the mobile phone cannot detect the transmission from the communication base station. The regular data information, so that the mobile phone cannot establish a connection with the communication base station, and then the mobile phone will appear as a search network, poor signal, no service system, etc.Mobile phone jammers are generally used in college entrance examinations, adult college entrance examinations, self-study exams and various colleges and universities; GPS jammers are used in detention centers, labor reform teams, and large and medium-sized prisons; schools, churches, courts, libraries; Party and government agencies, enterprises All kinds of large, medium and small conference rooms, concert halls, theaters; gas stations, oil depots, oil fields, gas stations and other flammable and explosive places.https://www.jammermfg.com/latest-silver-6-antennas-portable-4g-cell-phone-jammer-for-sale.htmlhttps://www.jammermfg.com/12-bands-desktop-high-power-signal-scrambler-jammer-for-sale.html
