A beautiful diy gsm jammer or mobile cell phone jammer schematic diagram for use only in GSM1900 with frequency from 1930 MHz to 1990 MHz. The GSM1900 mobile phone network is used by USA, Canada and ...

These days phones have become an integral part of our life. We carry them everywhere and at times it can be downright annoying to hear your phone ringing especially at places you expect silence. We ...