According to the Regulations of the People's Republic of China on Radio Management, which came into effect on December 1, 2016, no unit or individual is allowed to use radio frequencies without authorization or cause harmful interference to radio operations carried out according to law.If necessary, it should be submitted to the local radio administration department for approval and filing.The management of mobile phone signal blocking is very strict, such as the use of government agencies, schools and other examinations need to be approved, and should be used in a controlled range within a specified period of time, shall not affect the normal communication industry.
