What is a cell phone jammer used for

  • JeffreyBarton
    I have learned some information about mobile interference devices on the Internet. But what's the use of such devices?
  • PerfectjammerPerfectjammer
    Hello, Jeffrey
    As a very popular device, cell phone signal jammer is used in various fields.
    For example, library, prison, classroom, church and other places. In addition, the government and private enterprises are also purchasing such products on a large scale

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