No matter what cell phone card you use, as long as the cell phone cards under China Mobile, China Unicom and China Telecom will be blocked. WIFI will also be blocked. Unless you use 5.8G WIFI to surf the Internet, because Bourne Builds A Cell Phone Jammer standard configuration does not block 5.8G WIFI. However, some schools may allow mobile phone jammer manufacturers to order 5.8G frequencies just in case, so this is not guaranteed to be absolutely foolproof. Whether it is a large signal jammer or a small signal jammer, its principle is to interfere with the mobile phone to receive the normal frequency sent by the base station through its own frequency, so that the mobile phone cannot contact the base station, so as to achieve the purpose of shielding. The principle of shielding WIFI is actually that the signal jammer will send out the corresponding frequency to interfere with the mobile phone to receive the normal frequency sent by the router, so that the mobile phone cannot connect with the router and cannot access the Internet normally. Mobile phone signal jammers are mainly used in some school examination rooms, dormitories, detention centers, troops and confidential meeting rooms, etc. Therefore, as long as you enter these places, your mobile phones will be blocked, and you will not be able to receive calls, receive text messages, and access the Internet normally. Without exception, nothing can be set to avoid being blocked. cell phone jammer
In the past, employees have tried to prohibit mobile phones from being brought into the factory, but with little success. The company has tried to use new technologies such as radio jammers to solve this problem. Bourne Builds A Cell Phone Jammer Is the subject of controversy. Many citizens believe that the device will affect their freedom of communication. Some dormitories have installed mobile phone signal jammers to prevent students from playing on their mobile phones and surfing the Internet at night. The cell phone signal is blocked.
