More and more qualification tests are now starting to block cell phone signals. Even high school exams now use them. So is this device really effective in preventing cheating?
2 commentsMost recent by PerfectjammerAugust 29Cell Phone
Hello, everyone. I have a 4G signal jammer, and it works very well all the time.But recently I heard that 5G mobile phones are going to be available in China. I'm worried that my jamming devic...
2 commentsMost recent by PerfectjammerAugust 29Cell Phone
Can block only the network functions in the room and not the calls? I mean I want to block the use of skype, facebook and other social software on smartphones and tablets. But we...