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The role and field of 4G mobile phone signal jammer

Signal jammers are created to block the work of communication equipment. The device operates on the same frequency as the cell phone, so it cannot interfere with cell phone functionality...

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4 advantages of cell phone signal jammer

1. Wide application Wireless jammers are mainly used in the examination room, and are not limited to the examination room. It can also be used in prisons, gas stations, mobile...

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