Today, in any formal or important examination process, mobile phone jammers will be installed in the examination room. The purpose is self-evident, which is to strictly prevent candidates who take the examination through technical means. Electronic equipment, wireless communication equipment, etc. cheating in exams. So every few days before the big exam, we always receive some calls from time to time, wanting to know some ways to crack the blocked mobile phone signal from us. Then the question arises: if it is clear that there is a mobile phone jammer installed in the examination room, is there really a way to penetrate it?

Let's make a hypothesis: If the students taking the test really have the ability to bring their mobile phones into the test room, and the mobile phone jammers installed in the test room were purchased within the last one or two years, and they have been troubleshooted and tested before starting the test. overhaul. In other words, these are definitely not outdated old products, because the old products probably do not support 5G signal shielding or even 4G signal shielding. Then under such hypothetical conditions, candidates should really stop trying to find any way to crack the mobile phone jammer, because once the shielding signal is launched, within its effective shielding range, there is really no way to crack it. Crack or anti-jamming.

Also based on the above assumptions, why do some candidates think that someone can penetrate the mobile phone jammer from other sources of information? The reason for this result is not difficult to analyze: the first possibility is that the test organizer did not immediately follow up the upgrade and iteration process of the mobile phone jammer, resulting in only a part of the mobile phone signals of various standards in the test room being blocked , and another part of the mobile phone signal is missed. The second possibility is that the preparation work before the test was not done well, and the mobile phone jammers were not checked one by one. Some devices may have malfunctioned, resulting in the lack of real shielding performance during the test. . There is also a third possibility, that is, the products provided by the mobile phone jammer manufacturers themselves have technical defects, such as: the transmission power of the shielding module in the equipment is too small, the frequency adjustment of the shielding module is wrong, or the mobile phone jammer itself The heat dissipation performance is not good, resulting in frequency shift of some shielding modules after the equipment has been working for a period of time.