Portable Mobile Signal Jammer to Block all Network

Mobile phones now are widely used and the normal frequency and common bands includes GSM, CDMA, DCS and PCS.  And now with the fast development of the high technology and the 2G &  3G signal also come into the market. And such kinds of frequency bands are widely used in the countries all over the world. As these communication mobile phone frequency bands make it possible for people worldwide communicate with each other easier, a lot of people also suffering from the negative effects of the mobile phones. So the mobile phone jammers can help people a lot in this case.