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Cellphone Signal 3G 2110-2170MHz

The 3G standard utilises a new technology called UMTS as its core network architecture - Universal Mobile Telecommunications System. This network combines aspects of the 2G network with some new technology and protocols to deliver a significantly faster data rate. Although it is now in the 4G era, the GSM signal in North America was still the dominant signal in many regions.

Over the past 10 years, 3G signals have been the most common mobile phone signal in the United States. Therefore, the 3G signal cell phone jammer is one of the most popular jammers. Teachers especially like to use 3G jamming devices, can effectively prevent students from sending text messages in class. Of course, today's 3G jamming devices are also equipped with the ability to interfere with 4G, effectively preventing students from cheating during exams.

In addition to education institution, libraries also need this kind of blocker device to keep the library quiet.
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