In the early stage of shielding equipment, 5g signal had just appeared and had not been vigorously promoted. 5g mobile phones had not been popularized, and it was not necessary for mobile phone jammers to interfere with 5g signal. In less than two years, 5g signals spread all over major cities. At this time, mobile phone jammers without 5g technology can hardly play a role. Manufacturers have improved the shielding equipment and added 5g band interference modules to ensure that the shielding equipment can effectively shield 5g signals. Shielding equipment has been constantly updated with the times. At present, many mobile phone jammers have added 5g modules to deal with the emergence of 5g signals.

Generally, signal shielding equipment is widely used in schools, by confidential places, conference rooms, gas stations and detention centers. In order to prevent students from not listening carefully in class, playing with mobile phones, cheating with mobile phones in exams, or listening to some important contents in meetings, shielding equipment can be used to prevent these situations. The mobile phone jammer interferes with the wireless signal received by the mobile phone through its own frequency signal, so as to shield the mobile phone signal.