Locations such as churches, meeting rooms, and classrooms are part of the application area. Using the phone in this location may cause obstacles. We installed a Car Cell Phone Disruptor device to end this situation. We once again provide adjustable multifunctional portable radio circuit breakers. How does this kind of technology mobile phone interference help? You can easily adjust all WiFi, 3G, 4G and GPS signals. Maintain peace and security. The interference radius of alladjustable mobile phone jammers will block the signal in the designated area. We recommend products with good reviews. It is the latest design with a cooling fan inside. Can be used continuously, no need to worry about high temperature. The call may be interrupted by other viewers. Suitable for places where mobile phone signals are absolutely prohibited. You can easily solve the problem. This product is currently in stock. We guarantee high-quality products. We guarantee delivery in the shortest possible time. We provide a one-year warranty for all products. The actual interference distance of smartphone jammers varies depending on the place of use. cell phone jammer