http://www.delhispycamera.net/mobile-jammer-in-hyderabad.html :- (+91-8510094371) A mobile phone jammer in hyderabad is an instrument,A working cellphone must be in constant communication with its network provider via a cell tower or base station. By sending out radio waves in cellphone frequencies, jammers launch denial-of-service attacks (DoS), causing mobile devices to lose base station communication.  Show less