Among those who use mobile phone jammers, some are to prevent cheating in exams, some are to keep the meeting quiet or keep the meeting information confidential, all of which are out of good wishes and purposes. In fact, there are many reasons why the mobile phone jammer disturbs the mobile communication signal. For example, when the user completely fails to take into account the communication needs of outsiders, the wrong use should have restricted the mobile phone communication of a small number of people (such as during the school examination), but the scope is extended to the nearby residents. Or, the use method is improper. Due to the improper installation position of the mobile phone jammer or its transmission power setting is too large, it should be controlled in a small range but not well controlled.

If the purchased mobile phone jammer does not meet the approved standard of radio equipment, the power exceeds the standard, or it is a poor and unqualified product. To find out the reason, in order to overcome its impact on mobile communication signals, it is also very simple: first, use standard products produced by regular manufacturers, secondly, select the installation position and direction of action, and thirdly, set appropriate transmission power to limit its transmission signals to a closed small range. As long as the above points are achieved, the influence on the nearby mobile communication signals can be minimized.

Due to the free propagation of radio waves in the air, the mobile phone jammer can not only block the mobile communication base station signal in a specific area and achieve its limited purpose, but also harm human health in varying degrees, so it should be carefully selected.