In the current market, the variety of mobile phone shields is dazzling, which makes it more difficult to choose a suitable mobile phone shield because different mobile phone shields are designed for different purposes.
It is very important to understand the mobile phone jammer before deciding to buy. At present, the operating frequencies of ordinary mobile phone jammers on the market are 869~894MHz; 825~960MHz; 1805~1880MHz and 1900~1990MHz. The service channels are CDMA800, GSM900, DCS1800, PCS1900, WCDMA, etc.
It is wise to choose the mobile phone jammer that should shield the frequency according to your needs. The working range of the jammer is related to the strength of the magnetic field and the distance from the telegraph station. Generally 200 meters away is ideal. Manufacturers usually test mobile phone jammers, so the shielding range will be different.
It is very easy to operate the cell phone jammer. After the antenna is installed correctly and connected to the power supply, the mobile phone jammer will operate automatically. If the mobile phone jammer is used to shield signals in a small area, a low-power jammer is sufficient to achieve this effect. According to related surveys, due to its better portability, more people prefer to buy portable mobile phone jammers.