the company will change a new Cell Phone Jammers for the customer

Different indication lights of different color of Cell Phone Jammers have different meanings.
Many people call this phone as a "brick" or King Kong, etc. This phone has a variety of formats, such as NMT, AMPS, TACS, but basically using frequency division multiplexing is only for voice communication, reception with instability, and lack of confidentiality, wireless bandwidth is underutilized. This phone is similar to simple duplex radio stations, calls are locked in a certain frequency, so the use of FM radio can eavesdrop on calls. Second-generation mobile (2G) mobile phone is the most common. Typically, these phones use PHS, GSM or CDMA standards these very mature, with stable quality and suitable standby talk time. In the second generation in order to meet the needs of data communication, some of the intermediate standard is also supported on the phone, such as support for GPRS and MMS Internet WAP services business, as well as a variety of Java programs.
3G, is the English 3rdGeneration acronym refers to the third generation mobile communication technology. Relative to the first generation analogue phones (1G) and second-generation GSM, CDMA and other digital phones (2G), third-generation mobile 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 (megabits / second), 384kbps (kilobits / second) and the transmission speed of 144kbps.
And then execute. Exe file. Right-click "Create Shortcut" This creates a shortcut (shortcut name can be modified as needed their own), the shortcut to the file copy or cut to \ Storage \ windows \ Start Menu, you can phone the "Start "found inside. If not, restart the cell phone. If it is necessary to start random procedures, into the \ Storage \ windows \ StartUp (Note: Do not restart the software shortcut on here, or start your phone will continue to reboot.), A shortcut on the \ Storage \ windows \ StartUp, it will randomly started. Rechargeable battery power supply circuit is divided into two parts and power supply modules: the main rechargeable battery provides 3.6V for the entire system operating voltage, while producing the required high MAX3238.  Cell Phone Jammers can be returned within 7 working days and the company will change a new Cell Phone Jammers for the customer.
Three-terminal power supply module LM7806 to an external +12 V DC power is converted to +6 V, connected to the ZIF connector pins 11 and 12, in charging mode, the TC35i provide +6 V, 500mA charging power. Start from the open-drain transistor circuit and power-on reset circuit. 10ms after power module (battery voltage must be greater than 3V), to make it work, you must within 15 feet () plus the length of at least 100ms low-level signals, and the signal fall time less than 1ms. Started, the signal should be kept 15 feet high.