There are many kinds of mobile phone signal jammer devices, generally handheld, wearable, and transmitter. The general shielding range of Cell Phone Jammer Raspberry Pi devices on the market is 500 meters in radius. The working principle of the mobile phone signal jammer device is to search and interfere with the mobile phone communication signal through some other band signals sent by the mobile phone signal jammer device, so that the mobile phone cannot be connected to the communication base station normally. To achieve the purpose of not being able to receive or send information and make calls normally. cell phone jammer Mobile jammer equipment is generally used for: 1. Large-scale examinations such as: high school entrance examination, title examination, national civil service examination, and other items that require examination room shielding; 2. Judicial systems such as prisons, detention centers, detention centers, courts, interrogation rooms, etc. And other places that need to shield cell phone signals: such as oil depots, confidential meetings, factories and mines, etc.
In fact, the easiest way to block cell phone signals is to turn on the phone's airplane mode. The airplane mode of the mobile phone is a convenient mobile phone signal mode introduced by the manufacturer in order to satisfy the users in some occasions where the mobile phone signal is not allowed to appear. For example, on an airplane, in a meeting, when you need to concentrate on something, and when you need a good sleep. Secondly, some specific frequencies emitted by other signal transmitting and receiving devices can also interfere with the communication signal of the mobile phone. In addition to some strong or abnormal magnetic fields, Cell Phone Jammer Raspberry Pi will also have a certain interference effect on mobile phone signals.