If you have a cafe, bookstore or movie theater and want to do something for most customers to get more rewards-install a jammer device and stop some boring cell phone calls. You know, some people may complain that they don’t want to be disturbed by others when they call... and you know, the reminder words and warnings at the entrance can’t do anything about it, and some guys can’t live without a mobile phone. minute.
Therefore, you need a cell phone jammer to shield 2G 3G 4G signals for you. Of course, please remind you outside that your area is covered by a signal blocker and your mobile phone is available, if they need to go somewhere to make a call. Yes, mobile phone users must have a free zone that will not disturb others. Finally, please note that mobile phone signal jammers cannot be used for upcoming 5G signals. It will take a long time to realize 5G in most areas, but only for existing 2G 3G 4G signals.