Today, except for the elderly and children, 5G smartphones have been popularized to the extent that everyone has one. However, due to the need for confidentiality or the requirements of the management system in some special places, it is not enough to carry or use mobile phones at will, except for prompts to actively turn off the mobile phone or temporarily In addition to keeping the mobile phone, the most effective solution is to install a 5G network jammer. But some customers have put forward such a demand: In fact, the regulations in our unit only need to interfere with the mobile phone's data access function, and still need to retain the mobile phone's answering or calling function. Then the question arises: Can the 5G network jammers on the market only interfere with data access without interfering with voice?

If we go back to 5 years or even 10 years ago, the 5G communication technology was not put into use at that time. At that time, most of the voice communication of mobile phones used the 2G network, and the 3G or 3G network was only used for data Internet access. 4G network. Moreover, the 2G, 3G, and 4G mobile phone standards at that time strictly divided the frequency band standards and frequency ranges. In that era, manufacturers of mobile phone network jammers could carry out targeted interference according to the frequency bands of various mobile phone standards. That is to say, in the era before 5G, mobile phone network jammers can basically treat voice functions and data functions differently, and selectively interfere with signals.

However, in the middle and late stages of the 4G era, especially after the comprehensive development and popularization of 5G communication technology, 4G and 5G networks are already sufficient to support the same frequency band processing of voice and data. For example: using a 5G smartphone, assuming that the phone is connected to the base station through the 2.6G frequency band, whether the phone is making voice calls, browsing websites, watching videos and other data transmission services, it will always maintain It is in the 2.6G 5G frequency band. In this case, the current conventional 5G network jammer cannot accurately distinguish the voice from the 2.6G frequency band because it only performs overall bandwidth coverage and signal interference for the 2.6G frequency band. And data, and in fact, voice and data itself are performed together in the same frequency band.

From this, it can be concluded that in the case of 5G popularization and application today, it is no longer possible to use conventional 5G network jammers to only interfere with data access without interfering with voice.