The first is out of domestic enterprises to integrate global resources

If there is on the turn of phone, cable damage is also more generally we do not have any information, we can use a very effective way to determine the normal cable, the receiver welded down from the top of the cable, and then use the digital beep file of the table, were two solder joint axis of the cable, the handset, measuring to the pin of the motherboard inline interface, if the cable is normal, certainly the two solder joints with the motherboard interface two pins a corresponding straight. Result, if a solder barrier is definitely the cable disconnection, can be compared with the new cable, and further validation. Of course, if found damaged the line, you can fly line connection. This kind of  cell phone jammer is independently researched and developed by the manufacturer.
Polyphonic music: a lot of the domestic machine chord damage to the speaker, reflected the phenomenon of mostly non-polyphonic music. Generally do not dismantle the motherboard, directly open up, measuring the resistance of the polyphonic speaker can judge polyphonic speaker resistance is 10 ohms. Of course, the polyphonic music ic damage can also cause this fault. The substitution can judge. Cable aging break will cause the judgment as above. Do not recognize the card: the lack of information of the domestic mobile phone, sim card circuit failure, we generally do not have information for reference, this will increase the difficulty of maintenance, and sometimes even impossible to start. However, almost all of the machines sim part of the detection methods are the same.
According to CCID Consulting's statistics, in 2004, China created a global 1/3 of the phone, while sales of nearly 80 million mobile phone sales exceeded 120 billion. With the acceleration of global mobile phone industry resource integration trend, China is increasingly becoming the center of gravity of the integration. The first is out of domestic enterprises to integrate global resources, such as TCL-Alcatel joint venture in 2004, Bird and cooperation at Siemens, and BenQ Siemens mobile phone division of the overall acquisition. It is particularly worth mentioning is also made remarkable achievements as one of the 3G standard, TD-SCDMA industry chain improvement and integration of resources, Siemens, Ericsson, Nortel Networks, Nokia, Motorola, ST, Tektronix, etc. a number of international giants have stepped up research and development and efforts to promote  phone jammer . Second, foreign giants have also inward integration of resources.