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How to choose a cell phone jammer?

Leo C. Jun 06, 2019 09:30

How to choose a cell phone jammer? This is a difficult question. Because different regions use different signal frequency bands, we need to choose different jamming devices according to different regions. In North America, for example, most urban areas have 4G networks.

In North America, for example, most urban areas have 4G networks. However, in most rural areas of the United States, 4G coverage is not perfect. Basically, they use GSM and 3G signal networks.