A GSM jammers is a kind of signal interception device. It is a device that sends signals with the same frequency range and generates transmissions that are effectively blocked by strong interference. People who use part of the phone will lose the signal, but for no reason, the phone shows no signal or no network status.
According to reports, top manufacturers primarily sell gsm signal blockers to military and law enforcement agencies, but they sell the equipment to everyone and state that the buyer is responsible for ensuring that the equipment is legal in his country and that the buyer bears full responsibility. Obligation to buy, own or use the equipment. The mobile phone industry opposes the use of these devices, and many have invested in gsm frequency jammer to address the growing problem of mobile phone users.