Now our mobile phone communicates with the base station through the uplink frequency, and then transfers the signal to the mobile service switching center to realize the call. In the standby state, the mobile phone communicates with the base station through the broadcast control channel. Once there is a call demand, firstly, it is allocated to the mobile phone service channel according to the specific conditions of the channel near the terminal through the request, so that the mobile phone can jump to the service channel to realize the call and data transmission , You can also use Cell Phone Jammer Backpack to judge the strength of surrounding signals. cell phone jammer
Because the test signal jammer is a device that can shield the communication signal of the mobile phone, within the effective range of Cell Phone Jammer Backpack, people can find that the mobile phone they use will soon show the phenomenon of no signal and no service, and they cannot dial at all. Make calls and send messages, etc. Imagine that in this case, no matter how you want to use your mobile phone to cheat, there is no way to achieve your goal. This naturally brings greater protection to the order of the examination room, so that candidates can be in a fair and stable examination room. Take the exam with peace of mind, and also make the test scores of the candidates more realistic and reliable. Now that the college entrance examination season is about to usher in, I believe many schools are looking for reliable and professional test signal jammers everywhere.
