Nowadays, as a communication tool, mobile phones have become a part of our daily lives. However, when mobile phones appear in certain situations, they should not be used by students to cheat during exams, which is very troublesome for teachers. So in order to address this phenomenon and ensure a fair and just exam, wireless jammers can come into play at this time.

When we enter the exam room, we suddenly realize that the phone signal is gone, and functions such as making calls and sending text messages cannot be used properly. If we want to use our phone to cheat online, it is even more impossible. Signal shielding equipment, as a major shielding tool in exams, has a strong ability to block signals. Generally, the wireless jammer in hand should be placed in the middle of the shielded signal area to maximize the shielding range. After turning on the power and confirming that the machine can be powered on normally, the switch should be turned on. After one or two minutes, the phone will appear in a signalless state, achieving the purpose of shielding the signal. The fundamental reason is that the wireless signal frequency band emitted by the shielding device during operation covers the signal frequency band of the base station, and the mobile phone naturally cannot receive signals within the working range of the wireless jammer. As long as the wireless jammer is turned off or out of its shielding range, the mobile phone will receive the signal from the base station again and can be used normally.