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As we all know, in the market there are some type of cell phone signal jammers, such as 3G blocker, 4G blocker, and new 5G blocker. A 5G blocker is rather expensive as it can almost block all cell phont signals including 2G3G4G5G, while a cheaper 3G blocker can only block 2G 3G. So, we are confused that whether a 3G blocker still work in this 5G era. Here, at jammerfromchina.com, a professional jammer/blocker sales platform, you may find a answer.