Whenever a base station tries to connect to a mobile phone, there is a high-power "noise" from a machine on the same frequency as the mobile phone. You'll find that the signals from your phone are too complex to recognize, so you'll refuse to communicate on your phone. Early wifi jammercan only block one set of frequencies, like 2G, while sophisticated wifi signal jammers can block several types of networks simultaneously, like 2/3/4G. How is this multi-network interference achieved?
Actually, it's simple. In the loop mode, the interference frequency bands corresponding to the three signals are played repeatedly, covering three frequency bands at a time, and the interval between the loops is very small so that the mobile phone has no chance to speak and can only sit quietly.
Multi-band wifi signal jammer
2/3/4G is covered, so what about Bluetooth and wifi? It doesn't matter, the same can be done. The wifi jammer device has evolved again, adding the frequency bands of Bluetooth and wifi to the scanning range, so that several common communication methods in society are completely covered. Many people do not understand the difference between the three methods of Bluetooth, Wi-Fi, and mobile data. It seems that they are all wireless communication technologies. In fact, the difference between the three is mainly in the frequency band. In mobile communication technology, 2G mainly works in the 900-1700MHz band, 3G works in the 1900-2100MHz band, and 4G works in the 2300-2500MHz band. While Bluetooth and WiFi work at 2.4GHz. At present, the main principle of signal shielding and signal jammers is to emit huge noise in the frequency band used by mobile phones, disrupting the normal signal reception and transmission of mobile phones. This small object is not only used to prevent cheating in exams but also often used to prevent terrorist attacks in politics and the military. But wifi wireless signal jammers are not like shopping for groceries and shopping. They are not purchased and used casually. Otherwise, it may involve illegal activities, so they should be used with caution.
