Using Block Command On Cell Phone Text Is A Must For The Exam Room
Good quality Using Block Command On Cell Phone Text Better performance, can block cell phone signals of different frequencies. Including the discontinued PHS. However, most mobile phone signal jammers mainly block 4G signals, and 5G signal jammers have gradually become the new darling of the examination room. Even if the group of people who cheated on the test updated their technology, the new mobile phone jammer in the test room could be used. The visionary company is perfectjammer. Over the years, it has been committed to researching the latest anti-cheating technology in the examination room, and has developed a variety of examination rooms cell phone jammer , which is a leading brand in the signal jammer industry.
When the phone communicates with the base station, Using Block Command On Cell Phone Text is like a troublemaker, deliberately making noise around you. The noise signal is too large, the mobile phone can't hear what the base station is saying, and the base station can't hear what the mobile phone is saying. In fact, this is not to block the mobile phone signal, but to erase the signal sent by the mobile phone in a large number of noise signals, so as to achieve the purpose of interference. At present, the mobile phone signal jammers used in the examination room are all frequency bands, which can interfere with all frequency bands of the three major operators 2G/3G/4G/5G, and WIFI signals and Bluetooth signals can also be blocked.