Usa Cell Phone Jammer

Nowadays, there are a lot of Usa Cell Phone Jammer of various brands, they all praise how good their mobile phone jammer products are. These propagandas are also mixed with many fake mobile phone signal jammer products, so it is generally difficult for buyers to distinguish. As a result, it is impossible to buy professional mobile phone jammer products. Therefore, before buying a mobile phone signal jammer, you need to verify the effect and qualification of the mobile phone signal amplifier brand that has the intention to buy it. For example, consult the merchant customer service, cell phone jammer Or check product reviews on the Internet, check the mobile phone signal jamming organ network of the merchant, and learn about some strategies for buying mobile phone signal jammers and so on.

This is also very important. Cell phone signals in mountainous areas and cities, or cell phone signals in urban villages and basements are completely different. In different areas and different locations, the available signal sources may be completely different. Even in a cell, the front and back signals of a building may be different. Usa Cell Phone Jammer According to the working frequency, it can be divided into CDMA800MHz, GSM900MHz, DCS1800MHz, WCDMA2100MHz, of which CDMA is used by Telecom 2G/3G/4G, GSM is used by China Mobile Unicom 2G, and DCS is used by China Mobile Unicom 2G (to make up for insufficient GSM coverage), WCDMA is dedicated to China Unicom's 3G. If your location is in a first-tier city and there is a need to solve the signal of China Mobile Unicom, then I suggest you use DCS equipment, which has a much higher success rate than GSM.