Many schools now install wifi jammer to prevent students from bad behavior in major exams or libraries, dormitory bedtime, some parents to prevent children from becoming addicted to the Internet, and factories to prevent employees from playing on mobile phones and causing production safety accidents. Blockers are actually everywhere around us, but the most common wifi signal jammer on the market only block mobile phones and WIFI2.4G signals. 2.4G WIFI signal and Bluetooth signal are all blocked. Therefore, as long as the wifi blocker is turned on in the room, the mobile phone cannot normally make calls, send and receive text messages, or surf the Internet. If you want to use WIFI to surf the Internet, you can only use a 5.8G frequency WIFI router. In addition, the only way to use the mobile phone normally is to install a mobile phone signal amplifier near the place where the wifi jammer device is used to compete with it. When the mobile phone signal becomes stronger, the blocker is more difficult to block.
What method can be used to break through the shielding of the signal by the wifi blocker?
There are two key points in this problem, one is the frequency band used by the mobile phone, and the other is the mobile phone itself. Generally speaking, the mobile phones we use are normal devices on the market, and their power is within the specified range and meets health standards. The networks used by mobile phones are the networks of the three major operators, which means that the frequency bands that mobile phones can support are the frequency bands used by operators. Therefore, under normal circumstances, ordinary mobile phones cannot break through the shielding of the signal jammer. Because the wireless wifi bluetooth jammer mainly suppresses the interference of the operator's frequency band, the mobile phone cannot communicate with the base station in this frequency band. To break through, there are two tricks: 1. Use a frequency band that is not within the shielding range of the jammer; 2. Use ultra-high-power communication at the same time between the base station and the "mobile phone" (install a mobile phone signal amplifier). However, the realization of these two methods requires not only the support of the mobile phone manufacturer, but also the cooperation of the base station, and the difficulty of realization is self-evident.
