Clearwire Wins Best of WiMAX World USA Award in Service Provider Category.

CHICAGO -- Clearwire Corporation (NASDAQ: CLWR) is the recipient of the Best of WiMAX World USA 2007 Award for its high-speed wireless Internet service in the Service Provider Deployment category. The annual awards, announced by xchange magazine, recognize leaders in the development and deployment of WiMAX technologies.

"xchange is pleased to acknowledge Clearwire's contributions to the development and promotion of WiMAX technology and services," said Mike Saxby, publisher of xchange. "WiMAX success is dependent upon sustained innovation of companies like Clearwire that will no doubt be rewarded in the marketplace but also deserve recognition by the community it supports."

Clearwire received the service provider award at a ceremony last night at the WiMAX World USA conference in Chicago. Clearwire's award win will be featured in the November issue of xchange, as well as on the WiMAX World and xchange Web sites.

Clearwire's next-generation, non-line-of-sight wireless broadband network solution connects customers through licensed or secured spectrum. Radio signals are transmitted from a tower to a small, wireless modem, which easily connects a user's computer to the Internet. With its simple plug-and-play installation customers can be on the Internet within minutes of set up.

The winners in seven different categories were selected by an independent judging panel, including Craig Mathias, principal, Farpoint Group; Will Strauss, principal analyst, Forward Concepts; Adlane Fellah, CEO and founder, Maravedis Inc.; Caroline Gabriel, lead research analyst, Rethink Research; Philip Marshall, vice president of enabling technologies, Yankee Group; James Farstadt, founder and president, rClient LLC; Michael Khalilian, chairman and president, IMS Forum; and representatives from xchange and Trendsmedia.

For a complete list of winners, visit www.xchangemag.com/wimaxusa2007.

About xchange

Founded in 1996, xchange is a monthly magazine for facilities-based service providers offering voice, data, wireless, IP, WiMAX and content. Its seasoned editors do more than simply report on industry news; they dig beneath the surface to provide analysis on what new equipment, new services, new regulatory activities and other new developments mean to xchange's readers. The publication has a quarterly IPTV supplement called On the Tube; an annual print and online buyer's guide; a companion Web site, www.xchangemag.com; a weekly newsletter, xchange xtra; and it hosts Webinars and publishes eBooks on special topics on a periodic basis.

About WiMAX World Conference & Expo

WiMAX World Conference & Expo is the largest event series in the world focused on WiMAX and mobile broadband. WiMAX World Conference & Expo is dedicated to providing a balanced view of where WiMAX stands today and what role it will play in the future of one of the fastest-growing market segments in the world - wireless and mobile broadband. WiMAX World incorporates all of today's converging and diverging issues surrounding WiMAX and mobile broadband. WiMAX World provides a comprehensive view of all the related technologies, as well as regulatory and spectrum challenges, and the business opportunities and risks as they relate to all the key constituencies involved in this critical marketplace. In 2008, WiMAX World will be produced in Asia, Europe and the United States. For more information, visit www.wimaxworld.com.

About Clearwire Corporation

Clearwire, founded in October 2003 by telecom pioneer Craig O. McCaw, is a provider of simple, fast, portable and reliable wireless high-speed Internet service. Clearwire customers connect to the Internet using licensed spectrum, thus eliminating the confines of traditional cable or phone lines. Headquartered in Kirkland, Wash., the company launched its first market in August 2004 and now offers service in 16 states across the U.S. as well as in Europe and Mexico. For more information, visit www.clearwire.com.