With a jammer installed, can a 5G mobile phone still cheat in the exam room?

Why can 5G mobile phones cheat in the college entrance examination room after installing a jammer? Every year in the college entrance examination, there are people who are caught cheating all over the country, but this year's cheating in the news is really a bit incomprehensible. The cheating student did not know what kind of weird method he used to escape the security check and successfully brought his mobile phone into the examination room. Logically speaking, now there are special signal shielding cars outside the examination room, and there are cell phone jamming device in the classroom. Even if the mobile phone is brought in smoothly, it will not be able to connect to the Internet, which is basically useless.

In the examination room of this information age, of course, the participation of mobile phone signal jammers is indispensable. With this device, at least it is impossible to cheat by relying on mobile phones. The college entrance examination of schools across the country is about to usher in. In order to ensure the quality of the exam, many schools have already started preparing for the exam room early. School exams are used to prevent students from using mobile phones to transmit information, leak test papers, and cheat in exams. Some are also used to prevent teachers from leaking test paper information on the way to escort test papers, which will have a bad impact on later exams. Therefore, many schools will choose to install frequency blockers . However, in Hubei Province, when a college entrance examination candidate took a math test, he took pictures of the questions with his mobile phone and uploaded them to Xiaoyuan to search for the answers.

The screenshots posted on the Internet show that the candidate's name Wu Moumou and his seat number 24 appear in the upper left corner of the uploaded math test paper screenshot. For some unknown reason in this examination room, the Wifi signal jammer did not block the 5G signal. In front of the invigilator, the examinee took a picture of a solid geometry problem and uploaded it to Xiao Yuan to search for the answer. This means that the student not only brought his mobile phone into the college entrance examination room, but also escaped the observation of the invigilator and the camera monitoring, successfully took pictures of the questions, broke through the signal shield, and uploaded the pictures to the answering APP. After the incident was reported by major news, it immediately aroused heated discussions among netizens. When entering the examination room for security check, the examinee hid his mobile phone in the thin clothes he was holding, raised his hands high to avoid the security check, and brought the mobile phone into the examination room in violation of regulations.
To shoot the question, I hid the mobile phone on the draft paper to take the picture, and then uploaded it to Xiaoyuan Souqi.

As we all know, signal jammers are set up in major examination rooms to block mobile phone signals, so why did this happen in this college entrance examination? But the problem is that signal jammers are not 100% safe and prone to problems themselves. For example, the shielding equipment outside the examination room in this cheating incident may be that the 5G frequency band that supports shielding is incomplete and failed to cover all signals. Assuming that the GPS Tracker jammer in the examination room only supports shielding 3G and 4G signals, it can actually shield some 5G signals. But if the cheater uses other independent 5G frequency bands for communication, the signal jammer will have nothing to do, which is very likely to be the case with the 5G mobile phone used by the college entrance examination.

There is also a possibility that the 5G anti-interference ability of the mobile phone used by the candidate to cheat is particularly good, forcibly breaking through the signal shielding device. You must know that there are indeed mobile phones that can achieve microwave transmission and anti-interference on the basis of 5G, and can even ensure the stability of transmission by independently adjusting the signal transmission power. At present, communication technology is constantly upgrading, and the 5G signal system is also different from the original 4G system. It is also possible that old-type interference devices cannot completely interfere with 5G signals. However, he believes that it is not difficult to make up for this loophole. It is necessary to confirm with the telecommunications department in advance what types of signals are near the examination room, and then deploy new types of jammers in a targeted manner.

As a national exam, the college entrance examination is related to the lives of tens of millions of students. One person's cheating may change the scores and schools of countless people. Therefore, I hope that the college entrance examination is fair to every candidate.

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