Four steps to teach you how to choose a mobile phone signal jammer

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2024-07-09 08:13:53 -

Cell phone signal jammers are produced to reasonably avoid and interfere with mobile phone-related signals, such as GPS, WIFI, 2G, 3G, 4G, or 5G in the future. It is mainly used in school examination rooms, prisons, detention centers, etc., to ensure the fairness and justice of examinations, high school entrance examinations, college entrance examinations, or usual mock examinations. So...

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