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Facing with the no stopping dins of cell phones, some experts have suggested the legal use of mobile signal blocker for teachers in school time. Cell phone jammer is specially designed for disabling the normal transmission of signals between mobile phone and the nearby base station. It is a so powerful device that can cut off all kinds of cell phone signals, such as to jammer 3G 4G GSM CDMA DCS PHS PCS, etc.
Cell phone and wifi blockers from worldjammer got good quality and suitable price. Anyone in need? Please contact us.