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Currently, there are 4G network signals on the market. In an innovative world, new technologies are needed. A few years ago, I heard of 3G mobile phones. Nowadays, 4G signals are becoming more and more popular. Interference devices such as deterrent devices have been developed. This is possible due to continuous improvements in technology. When doing important work, it is best to use 4G how to detect cell phone jammer in nyc to prevent unnecessary calls. Some products have a handheld design. You can take it with you. Especially the latest models are designed for the latest smart phones. Utilize new interference technology. It has excellent performance. It has the appearance of duralumin. Such a 3G jammer is very convenient. Safe and useful in daily life and work. It can block other signals, can meet various needs, and its working conditions are very good.