cell phone jammer has the complete frequency covering range

3rd Generation 3G is the English abbreviation of the third generation mobile communication technology. Relative to the first generation analogue cell phones (1G) and second-generation GSM, TDMA digital cell phones, etc. (2G), third-generation cell phones generally speaking, refers to wireless communications and the Internet and other multimedia communications with a new generation of mobile communication systems. It can handle images, music, video streaming and other forms of media, including web browsing, conference calls, e-commerce and other information services. In order to provide this service, wireless networks must be able to support different data transfer rate, ie indoor, outdoor, and driving environment can support at least 2Mbps (megabytes / second), 384kbps (kilobytes / per second) and 144kbps transmission speed. The personnel are carrying out the control wiring of cell phone jammer system.
Now 2G network bandwidth is 9.6Kpbs. 2.5G to 56Kpbs. 3G will have a wider bandwidth, the transmission speeds of up to 100 - 300Kbps, not only to transmit voice, but also transfer data to provide fast, convenient wireless applications, such as wireless access to Internet. However, part of Ericsson's products are a 17-bit IMEI code, such as T18sc and T28sc. It is the meaning of the top 15 and the general meaning of the same IMEI code, after the two is the version of code, the user is not important. IMEI code of the first six digits that TAC code. TAC code represents the cell phone model. Whether Nokia, Ericsson or Motorola's products, as long as the same type of cell phone, TAC code must be the same. Nokia 6150 IMEI code as the top six is definitely "493,002." The installation position of cell phone jammer plays an important role.
IMEI code of the 7,8 position that the FAC code, its meaning is the complete assembly is the last cell phone in which a factory. Each factory has its own special code, so this is not country-made code. However, the eyes of users will complete the final assembly process where the plant origin as a cell phone. Therefore, FAC code also can be considered the origin of the cell phone code. IMEI code of the 9 to 14 is the SNR code, is the factory cell phone number. Cell phone number of the factory serial number and other manufactured products, is for the factory's internal management services, the user is not very meaningful. IMEI code of the last code that SP is an alternate cell phone number, usually zero. However, there are some cell phone of the SP code is not zero, this is normal. Here's to the Nokia 6150, Motorola cd938, Ericsson T18sc do demonstrations to help understand. The main computer should be provided for cell phone jammer system.
A Nokia 6150, press the "* # 06 #", the screen appears "IMEI 493002407599521" words. "493 002" approved on behalf of the cell phone model is 6150; "40" represents the final assembly for the Beijing; "759 952" is the factory cell phone number; one is the alternate number. A Motorola cd938 press the "* # 06 #", the screen appears "447,769,804,451,095" word. "447 769" model is approved on behalf of the cell phone cd938; "80" on behalf of final assembly in China; "445 109" for the factory cell phone number; "5" is an alternate number. An Ericsson T18sc press the "* # 06 #", the screen appears "520027-19-012435-8-05" word. "520 027" approved on behalf of the cell phone model is T18sc; "19" is the final assembly on behalf of the United Kingdom; "012 435" is the factory cell phone number. The position of  cell phone jammer can influence the shielding effect of cell phone jammer .
"8" represents the alternate number; "05" for the version of the code. FAC code knowledge a lot of cell phone users do not know all the cell phones on behalf of FAC code of origin, major cell phone manufacturers are listed below the origin of the FAC and the corresponding code. Users will be transferred out after the IMEI code, in addition to place of origin, should pay attention to whether the code back of the cell phone's IMEI code (remove the battery to see), IMEI code on the box and warranty card on the same IMEI code. If not, then the cell phone is generally not the fake ones the shell of the old machines and shoddy products. If consistent, then your cell phone in general is a genuine. However, there may be a very small parallel, this time, you only have network card is then made look fake. The technical personnel are working on development of remote control function of cell phone jammer .