Do conventional mobile phone signal jammers have blacklist and whitelist functions?

We often receive inquiries from customers about mobile phone signal jammers, specifically asking about functional requirements, such as blocking individual mobile phone numbers or allowing specific numbers to remain unblocked. These requirements refer to what is commonly referred to as mobile phone blacklist or whitelist functions. Now, the question is: Do traditional Cell Phone Jammers have blacklist and whitelist functions?

The answer is simple. As a professional mobile phone signal jammer manufacturer, we can clearly say that traditional signal blocking devices do not have blacklist and whitelist functions.

The reason is that the working principle of our most common mobile phone signal jammers is relatively simple. These devices usually amplify the interference signal (white noise), then power it and further amplify it, and then transmit it through the antenna. When a mobile phone user enters the coverage area of ​​the jammer, the signal blocking is not targeted at a specific mobile phone number, and does not involve any analysis or discrimination. Signal blocking affects all mobile phone numbers indiscriminately. Moreover, the jammer does not distinguish between mobile phone operators and network standards, whether it is 2G, 3G, 4G or 5G.

Some customers will ask if there is a mobile phone signal jammer with blacklist and whitelist functions. Such devices do exist, but they are not traditional mobile phone signal jammers, and cannot be used as a selling point. They are generally classified as pseudo base stations. However, it should be noted that, as a general user, the unauthorized purchase and use of devices with these functions is strictly prohibited. Specialized departments or licensed units in our country must purchase these devices from authorized manufacturers through formal channels.

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