Emf Blocking Cell Phone Case Belly Armor Blocking The Network

Perfectjammer 2022/04/25

The current Emf Blocking Cell Phone Case Belly Armor is the full band. It can block all 2G 3G 4G signals, 2.4G WIFI signals and Bluetooth signals of the three major operators of China Mobile, China Unicom and China Telecom. Its principle is to use the frequency it emits. Interfere with the frequencies sent by the base station and wireless routers received by the mobile phone, thereby shielding them. In a certain frequency range, the mobile phone and the base station are connected by radio waves to complete the transmission of data and sound with a certain baud rate and modulation method. The cell phone signal jammer scans from the low-end frequency of the forward channel to the high-end frequency at a certain speed during operation. This scanning speed can cause garbled interference in the message signal received by the mobile phone. The mobile phone cannot detect the normal data sent by the base station, so that the mobile phone cannot establish a connection with the base station, so as to achieve the purpose of shielding the mobile phone signal. No service system, etc. Generally speaking, the working principle of mobile phone signal jammer is that the frequency emitted by cell phone jammer interferes with the normal frequency of the mobile phone receiving the base station, so that the mobile phone cannot connect to the base station, so that it cannot make calls, send and receive text messages and surf the Internet normally.

Some netizens broke the news that a university in Sichuan installed Emf Blocking Cell Phone Case Belly Armor in the classroom. Netizens posted long articles expressing their dissatisfaction with the school, believing that such measures were unreasonable. On the afternoon of September 17, a reporter from the Chengdu Evening News learned from Sichuan City Vocational College that the school installed mobile phone jammers in the classroom to build a postgraduate examination room, and set up mobile phone bags to strengthen teaching construction and improve classroom discipline. manage. The relevant person in charge of the school's academic affairs office told reporters that because the school is building a postgraduate examination room this year, some classrooms have installed mobile phone signal jammers. They are still being installed and constructed and not yet in use.

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