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Welcome to the professional jammer Wikipedia. This is all about 3G/4G/5G cell phone jammers, GSM blockers, GPS jammers, wi-fi/bluetooth scramblers, drone jamming devices. This website is professionally supported by Dojammer. An expert will answer all your questions daily from 9am to 7pm. If you have any questions about interfering equipment, please ask now and you will receive a response shortly.