As of the end of 2021, according to data released by the Ministry of Industry and Information Technology of China, all prefecture-level cities, more than 97% of county-level urban areas, and 40% of townships and streets in China have achieved 5G signal network coverage, and 5G terminal users are even more It has reached 450 million, accounting for more than 80% of the world. The cell phone jammer purchased by schools in previous years, because 5G was not launched when they were purchased, so these signal jammers can no longer be used for 5G signal shielding in the current test room signal shielding process, which makes school test room users face how The problem of upgrading or replacing the original mobile phone signal jammer.
Over the years, signal jammers have experienced 4G iterations from the original 2G and 3G eras, and now they are in the process of catching up with 5G iterations. If the originally purchased mobile phone signal jammer does not have the assembly space reserved for the 5G upgrade module, the customer can have two choices:
1. The SMa-818K90 medium-power mobile phone signal jammer 5G module produced by our company can be purchased separately, that is, only the new frequency band module for 5G needs to be purchased and used together with the original signal jammer to achieve 2G/ 3G/4G/5G completely shield the complementary effect of the signal.
2. Abandon the original old mobile phone signal jammer, and re-select an economical and practical signal jammer. Now it has 2G/3G/4G/5G full-standard mobile phone signal shielding equipment. Our main model is: SMa- Type 818B5, which is a stand-alone version. In addition, we also have an intelligent mobile phone signal jammer that can be controlled by the network, the model is: SMa-818B5-PLUS.