In the daily customer consultation, we often encounter this situation. Some customers ask, the company has installed a mobile phone signal jammer, and the vast majority of mobile phones can be interfered. Why do some mobile phones still have signals? Does this have anything to do with the mobile phone brand?

The key to answer this question is to first know the principle of mobile phone signal jammer. As we all know, the principle of the jammer is the white noise signal of a frequency band transmitted by the jammer. If the white noise signal is higher than the signal strength of the mobile phone on the spot, the mobile phone will be interfered and there will be no signal. After understanding this principle, you will know whether the mobile phone is disturbed or not, which has no direct relationship with the brand of the mobile phone. The interference effect depends on the strength of the mobile phone signal at the site of use, that is, it is related to the distance between the base stations.

So why do some mobile phones receive mobile phone signals normally? After discussion and analysis, there are the following reasons for this situation:

1. It is possible that the operator to which the mobile phone number belongs is relatively close to the base stations around the site, resulting in a relatively strong signal from the base station to the site. Although a mobile phone signal jammer is installed, the jammer does not completely cover the signal of the base station, and the mobile phone can receive the signal of the base station.

2. Maybe this mobile phone has strong anti-interference ability, and it can detect strong interference nearby, but the mobile phone itself receives the strongest base station signal in the field after analysis. Even in the place where there is no jammer, the signal is very weak, and it can also ensure the basic functions of the mobile phone such as normal telephone call.
How to solve this situation is actually very easy. Through the detection of professionals, find out the frequency band of this strong signal, and then carry out targeted interference in this frequency band.