China Tri Band Cell Phones - Wholesale GSM Mobile Phones
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China Tri-band Mobile Phones
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If the single literally, the so-called "Tri-Band" is contained 3 working frequency, the three working frequency is GSM900Mhz, DCS1800Mhz PCS1900Mhz and informative, then, the so-called "Tri-Band mobile phones" is refers to hand Machine can also receive GSM900M, DCS1800Mhz and PCS1900Mhz these three PinLvDuan, make the signal Choose the signal intensity, who, in which a signal, if one party base disconnected, can turn to another frequency band Signal.
It is actually expanded phone connection. In some cell phones users were concentrated regions, especially Appropriate use of mobile phone, because three frequency can be flexibly in frequency mobile GSM900, DCS1800 and PCS1900 switching between Can always keep calling. And PCS1900 trillion nets, is North America (America, Canada) communication network domain Using the network.
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