The Evolution of Signal Jammers in the 5G Era

Upgrading Signal Jammers to Meet the Demands of 5G Networks

As of the end of 2021, data released by the Chinese Ministry of Industry and Information Technology reveals that over 97% of county-level urban areas, 40% of township streets, and all prefecture-level city urban areas in China have achieved 5G signal network coverage. With a staggering 450 million 5G terminal users, China accounts for over 80% of the global market share. However, the introduction of 5G technology has posed a challenge for educational institutions that have previously purchased signal jammers designed for older generations of mobile networks. This article explores the options available for upgrading or replacing these signal jammers to effectively block 5G signals in examination halls.

Option 1: Upgrading Existing Signal Jammers

One possible solution is to purchase the SMa-818K90 model, a medium-power Cell Phone Jammer with a 5G module produced by our company. This module specifically targets the additional frequency bands introduced by 5G. By combining this module with the existing signal jammer, it becomes possible to achieve complete signal blocking for 2G/3G/4G/5G networks. This option allows educational institutions to make the most of their previous investments while adapting to the advancements of 5G technology.

Option 2: Selecting Economical and Practical Signal Jammers

Another option is to discard the outdated signal jammers and opt for the SMa-818B5 model, a cost-effective and practical signal jammer that supports 2G/3G/4G/5G networks. This standalone device provides comprehensive signal blocking capabilities and is highly recommended for educational institutions. Additionally, for those seeking advanced features, our company offers the SMa-818B5-PLUS model, an intelligent and internet-connected signal jammer.


With the rapid development of 5G technology, signal jammers have undergone significant iterations, transitioning from the 2G and 3G eras to the 4G era, and now adapting to the 5G era. Educational institutions faced with the challenge of blocking 5G signals in examination halls have two viable options. They can either upgrade their existing signal jammers by purchasing the 5G module, or they can replace them with cost-effective and practical signal jammers that support all generations of mobile networks. By embracing these solutions, educational institutions can ensure a secure and fair examination environment in the age of 5G.