Clearwire Launches CLEAR 4G WiMAX Innovation Network in Silicon Valley

Bright House, Comcast, Sprint, and Time Warner Cable Join Cisco, Intel and
Google in Clearwire`s 4G application development initiative

Largest 4G WiMAX "sandbox" for developers to cover more than 20 square miles in
Santa Clara, Mountain View and Palo Alto, California

Qualified developers can register beginning today

Clearwire to highlight 4G WiMAX as platinum sponsor of Sprint`s Open Developer
Conference in October

KIRKLAND, Wash.--(Business Wire)--
Clearwire Communications, LLC, an operating subsidiary of Clearwire Corporation
(NASDAQ: CLWR), today officially introduced the software development community
in Silicon Valley to the largest 4G WiMAX application test environment with the
launch of the company`s CLEAR 4G WiMAX Innovation Network. The developer
network, which is a precursor to commercial service planned for the San
Francisco Bay Area in 2010, will cover more than 20 square miles in Santa Clara,
Mountain View and parts of downtown Palo Alto, California.

"We see tremendous potential for true, mobile broadband to act as the catalyst
for new and compelling Internet applications that leverage our 4G bandwidth,
free of the confines associated with wired connections," said John Saw, chief
technology officer of Clearwire. "Our goal is to harness the concentration of
developer talent in Silicon Valley and accelerate the pace at which these
disruptive services are being developed."

The current coverage footprint includes the local campuses of Intel and Google,
two founding Innovation Network supporters who have also commenced their own
internal 4G application development programs. Cisco`s campus will receive
coverage in the coming months as the network expands.

"Our long history of innovation with WiMAX, including our development efforts in
Portland, OR, allowed Intel to be among the first in the U.S. to have access to
this exciting, next-generation 4G environment," said Sriram Viswanathan, vice
president of Intel Capital and general manager of WiMAX Program Office at Intel.
"Along with the WiMAX ecosystem, we look forward to expanding these mobile
broadband resources and efforts in an area home to the one of most
technology-savvy groups of individuals in the world."

"Mobile broadband is fundamentally changing the way people use the Internet, and
4G networks like Clearwire's have incredible potential," said Larry Alder,
mobile product manager at Google. "We're excited to see how developers will take
advantage of this unique asset as Internet users increasingly expect
connectivity regardless of their device or location."

"Cisco`s Internet Protocol Next-Generation Network infrastructure is playing a
key role in the Silicon Valley Innovation Network," said David Goeckeler,
general manager of Services and Mobility business unit, Cisco. "An IP network is
the right platform to deliver on the promise of mobility and put 4G services in
the hands of some of the most talented and creative developers in the world."

Leading Communications Companies Join Innovation Network

Bright House, Comcast, Sprint, and Time Warner Cable also will join Clearwire,
Cisco, Intel, and Google as partners in the Innovation Network with plans to
participate in promoting the program and deploying 4G development resources into
the network.

"At Bright House, we`re always searching for new and innovative capabilities to
bring to our customers," said Leo Cloutier senior vice president, strategy &
business development, Bright House Networks. "We`re strongly supportive of this
initiative and its ability to leverage the creative talent of developers in the
region for the creation of new mobile broadband applications."

"Combining the speeds of broadband with the mobility of wireless communications
gives the development community in Silicon Valley a unique opportunity to create
differentiated applications," said Tom Nagel, Comcast's senior vice president
and general manager for Wireless. "Comcast is pleased to support this
development program to spur further innovation with 4G capabilities. The
initiative is consistent with our own commitment and efforts to encourage
developers to leverage open standards such as Tru2way."

"Sprint continues to demonstrate its leadership in the growth and deployment of
4G networks and technology and in the developer community," said Len Barlik,
vice president of wireless and wireline services for Sprint. "Sprint is the
first carrier to offer an open community that gives developers the platforms and
network to create innovative applications and the ability to introduce new
services to the market. The availability of 4G in the Silicon Valley is a great
opportunity for developers to immediately begin the development of the next
generation of wireless applications."

"Time Warner Cable looks to provide services that are simple, easy to use and
give customers more control and convenience," said Michael Roudi, group vice
president of wireless services for Time Warner Cable. "We are proud to support
the efforts of developers in the Silicon Valley to experiment and create new
applications which will take advantage of the mobile broadband network and
enhance our customer`s wireless experience."

Additionally, Clearwire announced today that it will participate as a platinum
sponsor of the Sprint Open Developer Conference scheduled for October 26-28 in
Santa Clara, California. Developers can register to attend the conference at
http://developer.sprint.com/devcon2009.

Developers interested in working in the CLEAR 4G WiMAX environment are
encouraged to attend the conference to learn about the Innovation Network from
Clearwire executives first hand.

A CLEAR Difference for Developers

Developers can expect to see peak download speeds of up to 10 Mbps, with average
download speeds of 3 to 6 Mbps. In contrast, some of today`s 3G wireless
networks typically deliver download speeds of between 600 kbps - 1.4 Mbps.

The experience is similar to that provided by Wi-Fi, but without the short-range
limitations of a traditional hot spot. CLEAR uses a 4G technology that differs
from Wi-Fi called WiMAX, which provides service areas measured in miles, not
feet. In addition, WiMAX technology is truly mobile and enables seamless
handovers from tower to tower, similar to cellular.

Service will be provided free to a limited number of qualified developers
leading up to the commercial service launch in this area.

To access the network, developers can purchase a Clearwire WiMAX USB modem for
$49.99. Developer-owned, CLEAR network-ready WiMAX devices, such as the Samsung
Mondi and WiMAX-embedded Intel-based PC`s, are also eligible for the program. To
qualify, developers must register for Clearwire's developer program and describe
the WiMAX development ideas they wish to pursue. Interested developers can
sign-up at http://developer.clear.com/innovation. The developers` website will
also include coverage maps and suggested drive routes for mobile application
testing.

About Clearwire

Clearwire Communications, LLC, an operating subsidiary of Clearwire Corporation
(NASDAQ: CLWR), offers a robust suite of advanced high-speed Internet services
to consumers and businesses. As part of a multi-year network build-out plan,
Clearwire`s 4G service, called CLEAR, will be available in major metropolitan
areas across the U.S., and bring together an unprecedented combination of speed
and mobility. Clearwire`s open all-IP network, combined with significant
spectrum holdings, provides unmatched network capacity to deliver next
generation broadband access. Strategic investors include Intel, Comcast, Sprint,
Google, Time Warner Cable, and Bright House Networks. Clearwire currently
provides 4G service, utilizing WiMAX technology, in 14 markets and provides
pre-WiMAX communications services in 40 markets across the U.S. and Europe.
Headquartered in Kirkland, Wash., additional information about Clearwire is
available at www.clearwire.com.

Cautionary Statement Regarding Forward-Looking Statements

This press release contains "forward-looking statements" within the meaning of
the securities laws. The statements in this release regarding plans for the
development and deployment of the first nationwide next-generation wireless
broadband network based on mobile WiMAX technology; the timing, availability,
capabilities and coverage of our network, including market launch plans;
products and services to be offered on our network; planned marketing and
branding efforts and other statements that are not historical facts are
forward-looking statements. The words "will," "would," "may," "should,"
"estimate," "project," "forecast," "intend," "expect," "believe," "target,"
"designed," "plan" and similar expressions are intended to identify
forward-looking statements. Forward-looking statements are projections
reflecting management`s judgment and assumptions based on currently available
information and involve a number of risks and uncertainties that could cause
actual results to differ materially from those suggested by the forward-looking
statements.

Future performance cannot be assured. Actual results may differ materially from
those in the forward-looking statements due to a variety of factors, including,
but not limited to, the risks referenced in the section of Clearwire`s Quarterly
Report on Form 10-Q entitled "Risk Factors," filed August 13, 2009.

Clearwire believes the forward-looking statements in this release are
reasonable; however, you should not place undue reliance on forward-looking
statements, which are based on current expectations and speak only as of the
date of this release. Clearwire is not obligated to publicly release any
revisions to forward-looking statements to reflect events after the date of this
release.

Clearwire Communications, LLC
Susan Johnston, 425-216-7913
Susan.johnston@clearwire.com
or
JLM Partners for Clearwire
Mike DiGioia, 206-381-3600
mike@jlmpartners.com

Copyright Business Wire 2009