I experienced a very strange thing. On the trains to other cities in the past few times, I often find that I cannot receive calls and send messages without a cell phone signal. What is the reason?
Jammer-MartDecember 2019
According to you, someone on your train should have been using the wifi jammer, and the person using it is not far away from you, but this is hard to find because the portable WiFi jammer is easy to hide and can b
According to you, someone on your train should have been using the wifi jammer, and the person using it is not far away from you, but this is hard to find because the portable WiFi jammer is easy to hide and can b