Sprint Nextel Corp. climbed 2.9 percent after the third-largest U.S. mobile-phone carrier said its new HTC Corp. Evo 4g handset broke the company's one-day record for sales of a single phone.

斯普林特·纳克斯·泰尔公司(Sprint Nextel Corp .)股价攀升2.9%，美国第三大手机运营商之前表示，宏达公司的Evo 4g手机打破了该公司单款机型的单日销售记录。

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Bita Goldman, 28, an attorney in New York, said she carries an extra charger with her for her HTC Evo smartphone, which runs on Sprint's WiMax 4G network.

WSJ: Fast Phones, Dead Batteries

Verizon has said it plans to implement the technology in 2014 and Sprint has said it plans to make HD Voice an option on the Sprint-exclusive HTC Evo 4G LTE.

CNN: Coming to your phone: High-definition voice

On this front, Sprint has had some success with the HTC EVO and partnered with Wired, Reddit and Ars Technica to spur 4G app development.

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