The wireless signal shielding system is commonly referred to as the mobile phone signal shielding system. Now when we use the mobile phone for communication, it makes contact with the base station, and then realizes the call after processing. When the mobile phone is in standby mode, contact the base station through. If a call demand is found, it will be allocated to the mobile phone service channel according to the specific conditions of the channel near the terminal by asking for instructions, so that the mobile phone can realize call and data transmission.

Through the above working principle, the wireless signal shielding system sends out the corresponding frequency to interfere with the mobile phone to receive the normal frequency sent by the base station, so as to cut off the communication between the mobile phone and make the mobile phone unable to establish a normal connection with the base station.