Block Restricted Calls On My Cell Phone Blocks Wifi Signal
Due to the rapid development of wireless network, it has now developed to 4G network, and many test rooms use older mobile phone jammers, and they are helpless with 3G and even current 4G networks. The cracking method: use 3G or 4G cards—— I feel like there is no 2G network anymore. Because the working principle of the school's mobile phone blocker is to block the mobile phone by interfering with the mobile phone signal of the designated band, as long as the receiving and transmitting frequency of the mobile phone is modified, it can be prevented from being blocked. cell phone jammer only blocks the mobile phone signal of 900-1800MHZ, while the mobile phone's receiving and transmitting frequency The frequency is 850-1900MHZ, which is much larger than the shielding range of Block Restricted Calls On My Cell Phone, so as long as the receiving and transmitting frequency of the mobile phone is adjusted to the maximum in the mobile phone settings, the mobile phone signal can be received normally. This method has relatively high environmental requirements, and the premise is that there must be an available wireless network around. Some cell phone signal blockers cannot block WIFI signals, but can communicate with the outside world.
As we all know, Block Restricted Calls On My Cell Phone are special tools against cheating, but they are not only used for cheating, but also in various industries, such as large conferences organized by countries, training institutions and the military. After we know what a cell phone jammer is for, we don't know how cell phone jammer manufacturers make them. A cell phone jammer can be said to be a high-tech device. Its main function is to shield the mobile phone signal within a radius of several hundred meters centered on the shielding device. For example, it is mainly used in the military. We all know that the military is a highly secretive place. Without such a shielding device, if you don't pay attention at all, the secrets in the army will leak out, which is not good. In addition, in the large-scale confidential meetings held by the state, the university entrance examination of students, the examination of civil servants, and the examination of business departments are often used.
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