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"I bought one, and I love it," said one cell phone jammer owner fed up with the din of dumb conversations and rock-and-roll ringtones. "I use it on the train all the time. I always zap the idiots who discuss what they want from the Chinese restaurant so that everyone can hear them. Why is that necessary? I can't throw the phones out the window, so this is the next best thing."
This portable jammer overs 3G/GSM/CDMA networks, USA, Europe, UK, Australia, Middle East, Asia.(excluding Japan)