https://topsignaljammer.com/ The operation method of the cell phone jammer is to first select the area where the mobile phone signal needs to be disconnected, and place the disconnector on the desktop or wall of the area. After assembling, connect the isolating switch, turn on the power, and turn on the power switch. After the signal jammer device is connected, tap the power switch to disconnect the device to operate. At this time, all smart phones that are turned on on site are in the network search state, the communication base station signal is lost, and the caller and the caller cannot establish a call.