During the college entrance examination, mobile phone signals in some areas will be affected by jammers and cannot communicate normally

It’s the annual college entrance examination season again. The 2020 National College Entrance Examination will be held from July 7 to 9. I wish all customers who have candidates taking the exam all the best! During the exam, each test site will activate a high-power signal shielding device, which will affect the wireless network quality of mobile phone users around the test site. Common problems that may occur include: difficulty in making and receiving calls, intermittent calls, slow mobile Internet speed, etc. After the exam, the network will return to normal, please rest assured. Please inform others of this temporary inconvenience.

Although the exam was postponed to July 7-8 due to the epidemic, we did not compromise in ensuring the security of the examination room information. The operator has issued an announcement stating that it will activate the wireless signal blocker in accordance with the requirements of the Education Bureau, which will affect the communication quality of mobile phone users around the campus. Normal communication can only be restored after the exam. Best-selling WiFi jammers and GPS jammers in Europe and America.

Now let’s understand the principle of the college entrance examination signal blocker and how it blocks mobile phone signals.

When the cell phone signal jammer is working, it will scan from low frequency to high frequency of the forward channel (the channel from the signal tower to the mobile phone) at a certain speed. This scanning process will interfere with the mobile phone’s ability to receive information signals, causing the mobile phone to fail to detect the base station’s signal and unable to establish a connection, thus being in a state of no signal and no service.

At present, the mobile phone signal jammers used in the examination room cover all frequency bands, thus affecting the 2G/3G/4G/5G frequency bands of the three operators. In addition, these jammers can also block all Wi-Fi and Bluetooth signals.

Best Selling Signal Jammers