Iphone Block Cell Phone Number
Installing " Iphone Block Cell Phone Number " is not an arbitrary action. The signal shielding range of the "mobile phone jammer" is limited to the classroom. As long as you walk out of the classroom, the mobile phone signal will be restored. In order to ensure that the health of students is not affected, the school attaches great importance to product quality. The installed "mobile phone jammer" is a qualified product that meets the relevant national standards for electromagnetic radiation and does not affect the human body. Many schools and examination rooms are already using qualified products. It can be seen that the school has a serious attitude when doing this and is responsible to the students. The scope of mobile jammers is limited to classrooms, indicating that the school’s actions are moderate and will not harm students’ freedom of communication and freedom of expression. The exercise of any right has boundaries and cannot harm the rights of others and the public interest. The same applies to the freedom of communication and expression enjoyed by citizens in accordance with the Constitution and the law, and they cannot exceed their due limits. If students play on mobile phones in the classroom affects the normal teaching order, they exceed the limits of their rights and should be restricted. cell phone jammer
The working principle of the mobile phone signal jammer is within a certain frequency range. The mobile phone and the base station are connected by radio waves, and the data and sound transmission is completed with a certain baud rate and modulation method. Iphone Block Cell Phone Number Scan from the low end frequency of the forward channel to the high end at a certain speed during work. This scanning speed can cause garbled interference in the message signal received by the mobile phone. The mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station and achieve the purpose of shielding the mobile phone signal. No service system and other phenomena. Generally speaking, the frequency emitted by the mobile phone signal jammer interferes with the normal frequency of the mobile phone receiving the base station, making the mobile phone unable to connect to the base station, and thus unable to make calls, receive and send text messages, and surf the Internet normally.