This is also very important. Cell phone signals in mountains and cities, or cell phone signals in urban villages and basements are completely different. In different regions and different locations, the available signal sources may be completely different. Even within a single unit, the front and back signals of a building can be different. Cell Phone Blocker From China According to the operating frequency, it can be divided into CDMA800MHz, GSM900MHz, DCS1800MHz, WCDMA2100MHz, among which CDMA is telecom 2G/3G/4G, GSM is China Mobile Unicom 2G, DCS is China Mobile Unicom 2G (to make up for the lack of GSM coverage), WCDMA is dedicated to China Unicom 3G. If your city is a first-tier city, and you need to solve the signal of China Mobile Unicom, then I suggest you use DCS equipment, its success rate is much higher than GSM.
The market is changing. Look for professionals with a solid understanding of current market conditions. We will do the corresponding work according to this situation. Many people don't fully understand certain situations. Professionals understand the embedded technology of decommissioning equipment. You can buy appropriately. The quality of the product can be guaranteed. What is the status of jail Cell Phone Blocker From China installation? On the whole, you will have a more accurate understanding of the different situations and complete the corresponding options. Therefore, cell phone jammer devices on the market began to enter into price competition. There are a few things to keep in mind when buying low-priced products. The blocking effect is good, but there are many problems when using it. When using a small cell phone shield, it is not possible to connect 220V directly. Use the power adapter to regulate the 12V voltage. Electromagnetic waves from the power adapter may interfere with cell phone jammers.
