Recently, a customer asked such a question: the mobile phone signal jammer originally installed and used by the unit has a good interference effect on smart phones, but recently it has been found that the interference effect on non smart phones is not very good. Why?

First of all, according to the principle of mobile phone signal jammer, what the jammer interferes is the communication signal sent by the base station to the mobile phone. Whether the mobile phone signal can be interfered is only related to the network system supported by the mobile phone itself, and has nothing to do with the brand and model of the mobile phone. Different mobile phone manufacturers, differences in production processes, and differences between devices used by various mobile phone manufacturers. Mobile phones of different brands and models also have certain differences. We don't consider the functions supported by the mobile phone. We only discuss the ability of the mobile phone to receive signals. If the ability of the mobile phone to receive signals is relatively strong under the same signal strength, the mobile phone can be used normally in places with weak signals. At this time, the signal strength from the base station to the site does not change, and the interference effect of the mobile phone signal jammer depends on the distance between the base stations around the use site, that is, the signal strength from the base station to the use site is related, not related to the brand and model of the mobile phone. If the non smart phone cannot be interfered at the use site, it may be that the non smart phone has stronger signal receiving ability than the smart phone. However, if the on-site signal has been flooded by the signal of the mobile phone jammer, there will still be no signal, even for non smart phones.

If the interference effect of mobile phone signal jammer on non smart phones is not good, it is necessary to adjust the mobile phone jammer itself, either increase the transmission power of each interference module of the mobile phone jammer, or choose a high-power mobile phone jammer. Or we can rationalize the interference module of the mobile phone signal jammer and refine the output frequency of the interference module again, that is to say, we need to add the interference module of a certain frequency band and reasonably split the transmission signal frequency of the interference module. For example, the output frequency range of the original interference module is 80MHz. By adding modules, the frequency of 80MHz is divided into two interference modules for output, In this way, the interference effect can be relatively improved, and the signal frequency bands used by non smart phones can be targeted covered.