What does mobile phone signal blocker?
Cell phone signal jammer is a device for cellular signal. When turned on, a signal vacuum can be formed quickly. Effectively block all kinds of cell phone signals. Due to the increasing demand, mobile signal interference devices can also interfere with other frequency bands such as GPS and WiFi. And, of course, there's 5G to come. 5G signals are said to be available in September 2019
Such device is usually used in education institutions, conference rooms, libraries and other places. In recent years, government agencies and private companies have also begun purchasing such device
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Mobile phone jammers are not harmful to human health
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