Everyone knows that when taking an exam, not only a quiet condition without mobile phone noise is required, but also people who are taking the exam are not allowed to use mobile phones and other communication tools. The same is true. In this state, it is indeed necessary to use cell phone portable jammer in the comments, but such devices have actually been invented. In this paragraph, you can view the detailed information of such jammers.
The results of the test should be fair to all those who take the test. In fact, as more and more people use mobile phones over a period of time, it is not easy to ensure this situation. Forward the response. Not only for others, to prevent this situation now, blocking cell phone signals seems to be the best choice. Now, Scrambler high-quality phones that can detect cell phone signals.