At present, the mobile phone signal jammers used in the examination room are all full frequency bands, which can interfere with all the frequency bands of the three operators 2G/3G/4G/5G, and WIFI signals and Bluetooth signals can also be shielded. The above is the principle of mobile phone signal jammer. However, the frequency band of electromagnetic waves ranges from a few Hz to several hundreds of GHz, and each segment may be used as a communication signal. Will there be some special frequency bands that are used in the examination room? This is true for other radio communication tools, and radio communication tools with dedicated frequency bands "came into being" in this context.

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As the mobile phone As the mobile phone gps jammer can block the phone and the GPS signals, in order to achieve calm and security conditions, the mobile Wi-Fi jammers can also help people protect the network and avoid loud calls. That is why more and more high power multi-function signal jammers are invented and widely used, all such high power multi-function jammers are designed to meet the needs of people.can block the phone and the GPS signals, in order to achieve calm and security conditions, the mobile Wi-Fi jammers can also help people protect the network and avoid loud calls.

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The development of smart phone wireless networks plays an important role in increasing the speed of development. Mobile phones can solve network problems. Mobile phones play a more important role in people's lives, mobile communications and mobile Internet. Because of this, it caused many problems. Especially in the home network, children are addicted to the network mainly because of the wifi network. Therefore, many families have gradually begun to install mobile phone wifi jammer to intercept the network to control the children's online time.

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