Everyone should remember that on June 8, 2021, a college entrance examination candidate in Huangpi District, Wuhan City used a mobile phone to search for college entrance examination questions, and was reported by the staff and rushed to the hot search.
How candidates brought their mobile phones into the examination room may be due to loopholes in the proctoring process. However, the test room has installed a mobile phone signal jammer, why candidates can still use their mobile phones to take pictures to search for questions, this is more confusing. Today we will discuss this issue.
The working principle of the cell phone jammer is to transmit the interference signal of the same frequency as the mobile phone signal. This interference signal is stronger than the mobile phone signal, and the mobile phone signal is covered, and then the mobile phone cannot receive the signal of the base station. service etc.
The signal used by this candidate's mobile phone is a 5G signal, and the 5G signal has not been interfered by the mobile phone signal jammer. The mobile phone is connected to the 5G signal and can be used normally. Then the mobile phone signal jammer installed in the examination room is most likely because of the comparison. It is old and has not been updated in time. The original mobile phone signal jammer does not have the function of interfering with the 5G signal of the mobile phone.
In the annual high school entrance examination, the functional departments of the government at all levels and related units will take joint actions to ensure the smooth and orderly progress of the high school entrance examination. The major operators are responsible for adjusting the signal strength of the base stations around the test room, and even temporarily shutting down the base stations, so as to ensure that the mobile phone signal jammer in the test room can play its true role and build the last line of defense to prevent candidates from cheating. Another possibility that the candidates used their mobile phones to cheat this time is that the operator did not reduce the signal strength of the base stations around the test room, which caused the mobile phone signal jammers installed in the test room to fail to effectively interfere with the 5G signal of the mobile phone.
At present, the distribution of 5G signals on the market has begun to spread rapidly. In order to effectively block 5G signals, it is necessary to update and upgrade the old mobile phone signal jammers in time to ensure that the mobile phone signal jammers can play their real role.