There are rumors that the wifi jammer device cannot block China Telecom and China Unicom numbers during the exam, and some say that the mobile phone will have a signal if it is attached to the wall. Is it true?
Jammer-MartNovember 2022
The wifi jammer used in the examination room is full-band and can block all 2G, 3G, and 4G mobile phone signals and 2.4G WIFI signals of China Mobile, China Unicom, and China Telecom. Therefore, as long as the wifi signal jammer is placed in the classroom, all mobile phones cannot be connected. phone calls, text messages, and the Internet. It is absolutely incorrect to say that the signal jammer does not shield Telecom and China Unicom. Unless there are signal transmission towers of China Telecom and China Unicom near the place of use, the signal of China Telecom and China Unicom mobile phones is particularly strong, and the power of the signal shielding device is too small to suppress it. At this time, China Telecom and China Unicom may not be able to shield. In addition, it is wrong that the mobile phone will have a signal when it is attached to the wall, but the farther it is from the wireless jammer, especially the window, there may be signal leakage.
The wifi jammer used in the examination room is full-band and can block all 2G, 3G, and 4G mobile phone signals and 2.4G WIFI signals of China Mobile, China Unicom, and China Telecom. Therefore, as long as the wifi signal jammer is placed in the classroom, all mobile phones cannot be connected. phone calls, text messages, and the Internet. It is absolutely incorrect to say that the signal jammer does not shield Telecom and China Unicom. Unless there are signal transmission towers of China Telecom and China Unicom near the place of use, the signal of China Telecom and China Unicom mobile phones is particularly strong, and the power of the signal shielding device is too small to suppress it. At this time, China Telecom and China Unicom may not be able to shield. In addition, it is wrong that the mobile phone will have a signal when it is attached to the wall, but the farther it is from the wireless jammer, especially the window, there may be signal leakage.