The youth and human rights advocate added that because the UK has a large number of mobile phone users, cutting off mobile communications will deprive them of their freedom of speech. From now on, the British government is considering the use of cell phone jammer in British prisons. However, they believe that cell phone jammers can be a useful tool to protect citizens from various crimes and maintain the security of British sovereignty. It is hoped that through the rational use of these things, the British authorities can become the heroes of modern society like the fictional super agent James Bond.
GSM is the most commonly used frequency range for cell phone networks and mobile communications. It includes four main frequency bands (850 MHz, 900 MHz, 1800 MHz, 1900 MHz) and many smaller standards used in different countries/regions in the world (such as UMTS, CDMA2000, Nextel, TDMA, AMPS, W-CDMA PCS, etc.) . In communication standards, 3G should be mentioned separately, because it is not only a modern communication frequency, but can also be used for other purposes. Unfortunately, using GSM and 3G frequency bands not only makes your life easier and more interesting, but also brings maliciousness. In order to interfere with GSM or 3G frequencies, mobile or office GSM. The difference between these two GSM jammers is that the portable 3G mobile phone jammer has a maximum operating radius of 15 meters, while the desktop 3G GSM CDMA jammer has a maximum interference radius of 200 meters.