Recently, I got a new device-a powerful 4G cell phone signal jammer, it can block the newest 4G cell phone signal in the USA.
I tried it, it is useful for meeting room, churches.
I think other places if need to keep privacy, it can be used too.
If the device can be used in correct way, i think it is an available device.
what's your opinion about a powerful 4G cell phone signal jammer?
I tried it, it is useful for meeting room, churches.
I think other places if need to keep privacy, it can be used too.
If the device can be used in correct way, i think it is an available device.
what's your opinion about a powerful 4G cell phone signal jammer?
