All phones are used at school 99% of the time, only for texting friends in another classroom, taking pictures, surfing the web, and “killing time” via social media at teacher meetings. I’m not saying mobile jammers should be legal everywhere, I’m just encouraging students to focus on teaching during school hours. Once the school is built and they leave the affected homes, they will be able to turn on their phones again, and once they leave the school, they will be able to provide all the services they need. Or, in a more convenient way, these cell phone jammer have an “on” and “off” switch that allows the principal to turn the device on and off during the appropriate study time. Mobile phone jammer laws vary globally. For example, in the UK and Japan, cell phone jammers can be used by anyone as long as they don’t use them. Dozens of countries, including Canada, Mexico, New Zealand, Norway, Turkey, allow police or prison authorities to use cell phone jammers. Schools in China and India are using cellphone jammers to stop cheaters. Mexico allows cell phone jammers in churches and hospitals. Pakistan allows mobile phone jammers to be installed in banks and libraries.
The principle of the mobile phone signal jammer is to interfere with the downlink signal of the base station, so as to achieve the purpose of shielding the mobile phone signal. At present, there are two ways to interfere with the downlink signal of the base station. One is high-power suppression, which is to use a device to emit 2\3\4\5G and white noise signals in the same frequency band as the base station signal to drown the original signal of the base station. , so as to achieve the shielding of the mobile phone signal. This method is a traditional method and will interfere with the uplink signal of the base station. The other is signaling-level intelligent shielding technology. This type of equipment is represented by ZXTY-GR03. The device scans the public network signal through the scanning antenna, and then blocks the public network base station signal through signaling-level instructions, simulates the public network base station signal to the environment, and internally transmits the fake base station signal to induce the mobile phone, thereby shielding the mobile phone signal. This kind of equipment has low power and good shielding effect, which is the development trend of a new generation of mobile phone signal jammers. In important meeting rooms, cell phone jammers are required in confidential meeting rooms. Using the excellent shielding effect of the signal jammer can make the mobile phone useless and effectively prevent someone from illegally using the mobile phone to shoot or record meetings. Audio is better for protecting important content.