The effective shielding range of cell phone signal jammers will vary in different usage scenarios. This is closely related to the field strength of the live signal. The shielding range of mobile phones of different standards at the same site is not necessarily the same; factors affecting the shielding range include but are not limited to: distance from the base station, orientation, obstacles, wall materials of the site building, Pocket Sized Cell Phone Blocker installation height, installation specifications, etc.; equipment It has undergone strict aging tests before leaving the factory, but it does not rule out that the equipment is individually damaged during transportation. If the customer shakes the device lightly after receiving the product and hears the sound of parts falling off, please stop using it and contact the dealer or manufacturer to check immediately. What is the impact of opening cell phone jammer during the exam? Do cell phone jammers really prevent cheating? To understand the basic principles of signal shielding, it is first necessary to understand how mobile communication networks work. The mobile phone needs to establish a connection with a nearby base station and connect to the communication core network through the base station. In the core network, information is processed through various parts of the core network and connected to the Internet. So as long as the connection between the mobile phone and the base station is cut off, the signal can be blocked. But after all, it is not feasible to set up an examination room in a city, and it is definitely not feasible to close the base station, so what should we do?
Various methods of cell phone jammers. In middle school physics, we used to learn about metal shielding and putting cell phones in sealed tin boxes. Soon the phone will be out of service. Of course, this method definitely won't work. It is obviously unrealistic to turn every examination room into a metal-enclosed classroom. Is there any way to achieve signal shielding simply, quickly and efficiently? We can imagine such a scenario: in a very noisy factory, A tries to talk to B, but the surrounding noise is so loud that B can only see A's mouth, but doesn't know what A is saying. This seems to be a good signal shielding method. What about electromagnetic signals? The answer is yes, Pocket Sized Cell Phone Blocker During the working process, scan the channel from the base station to the mobile phone to the high frequency band at a certain speed, and receive the SMS signal on the mobile phone. In this process, interference is formed, so that the mobile phone cannot detect the normal data sent by the base station, and thus cannot establish a connection with the base station, showing a state of no signal and no service.
