Making the selection of a phone blocker easier

Nowadays, the wide popularity of cell phones brings us great convenience. On the other hand, cell phones are disturbing to some extent. We are always bothered by other's sudden phone rings while we are devoting our mind in doing something, for example, when we are lost ourselves in reading an interesting book in a library, a sudden phone call may spoil everything. When we are doing a research program, an unexpected mobile ring may mess up our train of thought. Then we began to turn to phone blockers for help. The wide spread of phone signal jamming devices indicate that they have become necessities of modern life.

Phone blocker is a device which can be used to prevent cell phones from receiving signals from their base stations. It can effectively disable cell phones from being used in locations where the use of cell phones is potentially disruptive. It works by sending out radio waves in the same frequencies as the mobile phones so as to interfere the normally operation of the cell phones. According to the purpose of application, the phone signal jamming devices can be classified in four types, including portable phone jammer, desktop phone jammer, wall mounted phone jammer and vehicle-mounted phonejammer. Mobile phone jammers are the ultimate solution of unexpected mobile phone use, which can be seen everywhere, like factories, meeting rooms, conferences, seminars, libraries, cinemas, religious places, public transport, concert halls, restaurants and educational institutions etc.

How to choose a right phone blocker seems not easy. Firstly, you need to know 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. After knowing that, you should 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 equip yourself a phone signal jammer so that you could choose a right one on the frequency Verizon of your area. Last but not least, please figure out the jamming range you require, as well as the purpose of your application. If you plan to apply it in a no-too-big zone, such as classroom, a general portable type is quite enough. But if you want to apply it in a 10000 capacity theatre center, you have to pay more for a high capacity mobile phone jamming device offering ultra wide jamming range.