Cell Phone Block Number When Calling Affects Phone Performance
In some places where the use of mobile phones is restricted, the most common operation method is to install a mobile phone signal blocker. However, there are always a small number of people thinking about how to crack the mobile phone signal blocker so that their mobile phones can be used normally. Is the method of the device reliable? If you want to crack the cell phone signal jammer, you must first understand the working principle of the cell phone signal jammer. The working principle of the cell phone signal jammer is to emit a white noise signal with the same frequency as the cell phone signal, thereby interfering with the signal received by the cell phone from the base station, and the performance of the cell phone. For no signal, restricted service, etc. The size of the shielding range of Cell Phone Block Number When Calling depends on the transmitting power of each module of the mobile phone signal shielding device and the signal field strength of the base station in use. The stronger the signal on site, the smaller the shielding range of the cell phone signal jammer.
A school in Chengdu installed Cell Phone Block Number When Calling in every classroom. Netizens feel that because the school is not a college entrance examination center, the installation of mobile phone signal blocking equipment is not very effective. It is usually open to the outside world and endangers the interests of students and teachers. They look forward to banning and deleting cell phone jammer . Naturally, there are also those who feel that the school has done the right thing. Journalists walked into the school to visit and inspect the site. Xiao Yang, a student of the school, said that they recently saw a notice on the school's official website to purchase a mobile phone signal jammer, "Since entering a regular high school, every time the teacher takes the test, the teacher brings it into the classroom, and the power cord can be plugged. The application is very convenient." Mr. Zhang said he did not know whether the machines would be open to the public normally because they have mobile phones.
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