Before you buying a cell phone blocker

Have you ever entered an area where your cell phone indicates "No Service"? You might be in a location where a cell phone blocker has been installed to stop the working of the cell phones. It is very troublesome that the phone rings everywhere in the modern life. The extensive popularity of cell phones brings a lot of disturbances to us, especially in the places where absolute silence is required. This accelerates the appearance of cell phone blocker.

There are four main types of cell phone signal jammer: handheld phone signal jammer, remote control cell phone jammer, high power mobile phone jammer and professional long range phone jamming blockers. Handheld jamming device is always the portable one. It comes with compact size and lightweight, which allows it to be easily put inside one’s pocket or carry-on bag. We also have a wide range of handheld cell phone jammers with different jamming range, which can disable all types of cellular signals including the new 3G band. Most of the ordinary handheld phone jammers offer isolating radius about 20 meters. They come with rechargeable Li-Ion battery, an AC charge and a car charger. The handheld mobile phone jammer is specially designed for ordinary customers. Remote control cell phone jammer is powered via dual voltage mains power supply (supplied). The remote control supplied with the cell phone jammer can control the power output in stages up to 10 watts as well as turning the jammer on and off. The high power cell phone jamming blocker owns strong ability in blocking the signals of different frequencies at the same time or separately. It is designed for companies and public places, such as libraries, cinemas, theaters, etc. Now, come to the professional long range jamming device. It is a kind of jammer with ultra high power. Professional long range cell phone jammer is specially designed for prisons and other sensitive locations such as military and government facilities.

There is something you need to know before buying a cell phone blocker. First, make sure the network frequency of your location. For example, in North America, GSM operates on the primary mobile communication bands 850 MHz and 1900 MHz. In Africa, Europe, Middle East and Asia, most of the areas use 900 MHz and 1800 MHz bands. Also, you need to make sure your local communications service providers. In America, the six largest providers are Verizon (GSM CDMA CDMA2000 LTE, etc), AT&T (GSM UMTS WCDMA, etc), Sprint (CDMA, iDEN), T-Mobile USA (GSM UMTS WCDMA, etc), TracFone Wireless, and MetroPCS. So you should check it through the Internet before you buy a mobile phone signal jammer so that it can give you comprehensive information on the frequency Verizon of your area. After that, you can easily find the right one for yourself.