Nowadays, mobile phones have become an irreplaceable and important communication tool in people's lives, with increasingly powerful functions. Of course, there are both advantages and disadvantages. The recent negative impact brought by mobile phones is not small, as they have become a new channel for leaks and criminal means. Therefore, it is very necessary to strengthen the control of mobile phones when needed. In some places such as exams, confidential department office spaces, gas stations, etc., where mobile communication is not required, wireless interference machines can be used. Due to their convenient installation and simple use, more and more units are using wireless interference machines. Moreover, the device signal is always in a relatively static state, which will not interfere with other electrical equipment. They have also played a certain role in some special places.

The wireless jammer emits a strong signal that is consistent with the frequency of the downlink frequency band of the mobile phone during operation, and tunes with the signal sent by the base station to the mobile phone, causing the downlink signal sent by the base station to deform and the mobile phone cannot recognize, thereby interrupting the connection between the mobile phone and the base station. Simply put, the main function of a wireless jammer is to prevent normal use of the phone. In fact, it is to block interference from the network signal frequency band used by the phone, so the phone cannot continue to use this frequency band signal to access the internet. Mobile phones cannot accept signals emitted from the outside world, and naturally cannot receive information. At this point, the phone appears to be out of service and cannot send information to the outside world, completing the purpose of signal blocking.