With the continuous advancement of science and technology, mobile networks have undergone several upgrades, from the initial 2G network to the current 3G, 4G, and 5G mobile phone signal networks, and wireless mobile phone signal blockers are also constantly improving.
Mobile phone signal blockers are mainly used in school exams, college entrance examinations, and places where mobile phones and other communication equipment are prohibited. With the expansion of the communication network frequency band, mobile phone signal blockers have also developed from single antennas to blockers equipped with more than 8 antennas. The latest development is the mobile phone signal blocker with a built-in antenna. A cell phone jammer worth buying.
So why do examination room signal blockers choose built-in antennas?
First of all, the mobile phone signal blocker with a built-in antenna has a beautiful appearance design and meets the aesthetic standards of modern people.
Secondly, the built-in mobile phone signal blocker is more environmentally friendly and safer. Mobile phone signal blockers with external metal shells are prone to high temperatures of 50-60 degrees Celsius after long-term use, which poses certain safety hazards. The electronic built-in antenna mobile phone signal jammer uses a plastic shell, which effectively solves this problem.
Third, the built-in antenna blocker is more convenient to carry, more practical, and has a lower maintenance rate. External antenna shields often have problems such as antenna loss and damage, while internal antenna shields integrate the transmitting antenna and power supply in the shielding shell, which is more convenient to use and carry. When needed, it only needs to be powered on and can be used normally without removing the antenna. The overall use effect and subsequent maintenance costs are significantly improved.
