Desktop signal scrambler in library

The library cell phone signal jammer can use a certain speed to scan the low-end frequency from low to high to the high-end frequency at a certain speed. With this scanning speed, garbled interference can be formed when the mobile phone receives signals. Therefore, the mobile phone cannot detect the signal sent by the base station when receiving data, and this interference cannot completely establish a connection between the mobile phone and the base station. In this case, you cannot send messages or make calls.

How to avoid signal interference with library cell phone signal jammer

Method 1: Due to the rapid development of wireless network, it has now developed to 4G network, and many test rooms use older model signal blockers, which can only block 2G networks such as PHS, China Mobile, China Unicom, etc., but not for 3G networks. Even the current 4G network is helpless, the cracking method: use a 3G or 4G card.

Method 2: Band cracking method. Because the working principle of the jammer in the library is to shield the mobile phone by interfering with the mobile phone signal of the specified band, so long as the receiving and transmitting frequency of the mobile phone is modified, it can be prevented from being shielded. The transmitting frequency is 8501900MHZ, which is much larger than the shielding range of the jammer, so as long as the receiving and transmitting frequency of the mobile phone is adjusted to the maximum in the mobile phone settings, the mobile phone signal can be received normally.

Method 3: wF cracking method. This method has relatively high requirements on the environment, and the premise is that there must be an available wireless network around. Some cell phone jammers cannot shield the F signal and can communicate with the outside world.
Method 4: Bluetooth cracking method. It is suitable for short-distance communication in the shielded area. Some shields may ignore the transmission function of Bluetooth without shielding, so we only need to install the Bluetooth messaging software on the mobile phone to communicate normally in a small range.