4G Technology | Image Source : dzoneonline.com The first cellphone in the U.S. to use fourth-generation wireless technology — better known as 4G — debuted this month with the promise of super-fast download speeds, smooth video streams and even video chat. The phone came from Sprint Nextel Corp.; Verizon Wireless plans to launch its 4G network this year, with AT&T Inc.

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4G wireless technology