If you want your quiet living environment not to be disturbed, then you absolutely need a cell phone jammer. If you want to know how this small device interferes with the phone signal, then you should understand this. Each handset can be considered a duplex device. This means it will transmit two frequencies. One for conversation and the other for listening.
Therefore, you should know that if you are buying a mobile phone blocker, you should take a closer look at its features. This way, you can be sure it is what you need. Of course, you should also know the frequency of your country and the mobile phone used on the Internet. Anyway, if you turn on the phone jammer, you will see that it will start sending frequency interference at the same frequency, and in this way block the phone signal.
Some cell phone jammers will only stop one of these two frequencies. Modern cellular jammers basically have this feature, and the connection between the phone and surrounding signals will be cut off, so you will not be able to speak. Jammers can transmit many different frequencies, so if you're willing to spend more on such devices, you should know that you can get some really good stuff. In addition, these devices are very effective for TDMA, GSM, AMPS, CDMA and other mobile standards, so if you want to block multiple frequency bands, a high power signal jammer is a good choice.