The main function of intelligent jammers is to block mobile phone signals and prevent normal operation of the phone. For places such as exam halls, prisons, gas stations, etc. that do not require mobile phones, they are essential equipment. It is very convenient to use during exams, as it only needs to be placed on the podium to interfere with the signals in the exam room, and its use in work will not affect students' exams. In addition, there is no need to worry about it affecting the use of other electronic devices. Intelligent jammers are mainly used to cut off the connection between mobile phones and base stations, achieving the effect of blocking mobile phone signals. So far, with the development of technology, this intelligent jammer has become increasingly excellent in performance and can cover a wider range, making it an important helper for shielding signals.

Now, based on the analysis of signal communication principles, multiple shielding methods for wireless signals can be integrated to block interference from the signal. At present, intelligent jammers scan channels from low-end frequencies to high-end frequencies at a certain rate during operation. This method causes the signal received by the mobile phone to become a pile of garbled code through interference, making it unable to receive normal data signals from nearby base stations, and naturally unable to communicate with the base station. At this time, the mobile phone will appear in a state of no signal, no network, no service, and so on.