The mobile phone signal jammer purchased by users earlier did not have 5G frequency interference module from operators. With the gradual popularization of 5G signal, the mobile phone signal jammer without 5g frequency can not interfere with 5G signal, so it is necessary to upgrade the 5g signal frequency of the jammer in order to interfere with 5G frequency signals.

According to the division of 5G signal frequency in various countries, if it is necessary to add interference modules, the interference modules should be supplemented according to the actual use frequency of local 5G signals. For example, China has increased the frequency of 700M, 3.4G-3.6G, and 4.8G-4.9G. If the frequency of some modules needs to be adjusted, the transmission frequency of the original interference module needs to be adjusted to 5G use frequency, or by adding additional interference modules to work together, the function of 5g signal interference can be achieved, such as the 2555-2655M spread spectrum of the original 4G in China to 2515-2675M.

It can also judge whether the mobile phone signal jammer needs to add the interference module of this frequency band according to different use sites.