TechFaith Wireless Communication Technology, a Chinese original design manufacturer, on Monday launched what it claims to be the world's first cell phone to support two cellular technologies in one.
The company's new phone, called Twins, can be loaded with one Wideband Code Division Multiple Access (WCDMA) SIM card and one Global System for Mobile Communications (GSM) SIM card, or dual GSM SIM cards.
Other features include a 2.0 megapixel camera, an MP3 and MPEG4 player, a WCDMA modem, video calling, and Bluetooth.
WCDMA is a third-generation high-speed digital data service provided by cellular carriers that use the TDMA or GSM technology worldwide. Carriers that use the technology in the United States include AT&T and T-Mobile. GSM offers slower speeds than WCDMA, so the dual SIM card capabilities allow a person to use the best available network in the country they're traveling to.
Twins will start shipping this November in Europe and Southeast Asia. In the U.S., the phone will only work where there is 1900 MHz coverage on a GSM system, said a TechFaith spokesman. This excludes Verizon Wireless, Sprint Nextel, and other carriers that use a different cellular technology called Code Division Multiple Access (CDMA).
source: yahoonews
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