The 5G mobile phone signal shielding instrument has become the standard test equipment in the testing room. Not only the high school entrance examination, but also the postgraduate examination, civil service examination and various qualification certificate examinations require mobile phone signal shielding devices to prevent candidates from communicating with the outside world through wireless signals. In the examination room where the cell phone signal jammer is used, various mobile phone signals (2345G), wireless intercom signals, Bluetooth WiFi signals, etc. will be blocked by interference.
The communication principle of mobile phone signal shielding scans from the low-end frequency of the forward channel to the high-end frequency at a certain speed during the working process. The scanning speed will cause garbled code interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent by the base station, resulting in the failure of the mobile phone to establish a connection with the base station. The mobile phone is characterized by searching the Internet, no signal, and no service system.
Our mobile phones must emit electromagnetic waves that meet the requirements in order to access our communication operator's base station. Different communication systems use different frequencies so that everyone can live in peace without interfering with each other.
The basic principle of the jamming device is to emit the same radio frequency signal as the mobile phone. Since the frequency is the same, the mobile phone cannot distinguish which signal is a conventional base station signal, thereby achieving "jamming". As long as there is a machine with the same frequency as the phone, when the base station tries to connect to the phone, there will be a lot of "noise", and you will find that the signal from the phone cannot be recognized.
The above is the explanation about the 5G mobile phone signal shielding instrument. If you have other questions, please continue to pay attention to us!