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Openwave WAP2.0 Software and Services Supports Over 12 Million Subscribers of KDDI's "au" 3G Mobile Phone Internet Services
Monday March 15, 9:02 am ET
Openwave Market Leading Technology Helps Perfect the User Experience and Strengthens Customer Loyalty

http://biz.yahoo.com/prnews/040315/sfm029_1.html

REDWOOD CITY, Calif., March 15 /PRNewswire-FirstCall/ -- Openwave Systems Inc. (Nasdaq: OPWV - News), the leading provider of open software products and services for the communications industry, today announced that over 12 million subscribers are now using Openwave's WAP 2.0 technology via KDDI's "au" branded 3G mobile phone services (CDMA 1X and CDMA 1X WIN) based on CDMA2000 1x and CDMA 2000 1x EV-DO technology.
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"Openwave technology has allowed us to provide our subscribers with the industry's most sophisticated mobile phone data solutions," said Takashi Tanaka, Vice President, Solution Product Development Division, Solution Business Sector, KDDI. "Openwave has been an essential partner throughout the development, launch, and expansion of our "au" 3G services. Providing mobile phone internet services over an open, standards-based network is an important strategy for KDDI going forward. Openwave's scaleable solutions have also been effective in handling high user usage rates for CDMA 1X WIN and other services. We look forward to working with Openwave to further expand our subscriber base."

The Openwave WAP 2.0 technology implemented at KDDI includes Openwave® WAP 2.0 Gateway (Enhanced Service Framework: ESF), Openwave Mobile Device Manager, and Openwave Mobile Browser. These technologies combine to form part of the infrastructure for KDDI's 3G CDMA 1X and CDMA 1XWIN data services. Openwave WAP 2.0 Gateway ESF uses modular architecture and enables high-speed exchange between a device and the appropriate content applications as well as content adaptation service.

In responding to current subscriber needs, Openwave WAP 2.0 Gateway ESF represents a substantial improvement compared to early WAP standards, and by providing a sophisticated user experience, it contributes to the successful development of a new business model and creation of a rich application environment. Openwave's emphasis on complying with industry standards enables interoperability with a variety of devices, and it has developed architecture capable of handling a wide range of content delivery methods, including push and browsing applications.

"Openwave is proud to partner with KDDI in order to enhance the user experience," said Paul Anderson, general manager and vice president, Asia Pacific, Openwave Systems. "We are striving to maintain and strengthen customer loyalty by continuing to help deliver the industry's preeminent user environment. Our contribution to KDDI demonstrates that Openwave can respond not only to current requirements, but also to potential future needs associated with building and expanding next generation networks."

About KDDI

Under its Designing The Future byline, KDDI is building infrastructure that will underpin the coming "ubiquitous-network society." KDDI is working to become Japan's premiere Ubiquitous Solutions Company by providing superbly convenient, high-quality solutions built on its vast array of technology and the know-how accumulated from years of experience in the field. With over 16 million mobile phone subscribers and some 10 million wireline contracts, KDDI is rapidly growing, providing customers with an information network that can be accessed anytime and from anywhere. For more information please visit www.kddi.com.

About Openwave

Openwave Systems Inc. is the leading independent provider of open software products and services for the communications industry. Openwave's breadth of products, including mobile phone software, multimedia messaging software (MMS), email, location and mobile gateways, along with its worldwide expertise enable its customers to deliver innovative and differentiated data services. Openwave is a global company headquartered in Redwood City, California. For more information please visit www.openwave.com.

Cautionary Note Regarding Forward Looking Statements

This release contains forward-looking statements relating to expectations, plans or prospects for Openwave Systems Inc. that are based upon the current expectations and beliefs of Openwave's management and are subject to certain risks and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. In particular, the following factors, among others, could cause actual results to differ materially from those described in the forward-looking statements: (a) the ability to realize our strategic objectives by taking advantage of market opportunities in the Americas, Europe, the Middle East, and Asia; (b) the ability to make changes in business strategy, development plans and product offerings to respond to the needs of our current, new and potential customers, suppliers and strategic partners; (c) risks associated with the development and licensing of software generally, including potential delays in software development and technical difficulties that may be encountered in the development or use of our software; (d) the effects of our restructurings and the ability to successfully support our operations; (e) the potential negative reaction by our customers to our reduced size and market capitalization; (f) the ability to recruit and retain qualified, experienced employees; (g) the willingness of communication service providers to invest and improve their data networks; (h) the ability to successfully partner with other companies; (i) the ability to acquire additional companies and technologies and integrate such acquisitions; (j) increased global competition; (k) technological changes and developments; (l) general risks of the Internet and wireless and wireline telecommunications sectors; and (m) the uncertain economic and political climate in the United States and throughout the rest of the world and the potential that such climate may deteriorate further.For a detailed discussion of these and other cautionary statements, please refer to the risk factors discussed in filings with the U.S. Securities and Exchange Commission ("SEC"), including but not limited to the Company's Annual Report on Form 10-K for the fiscal year ended June 30, 2002, the Company's Quarterly Report on Form 10-Q for the quarter ended March 31, 2003, and subsequently filed reports. All documents also are available through the SEC's Electronic Data Gathering Analysis and Retrieval system (EDGAR) at www.sec.gov or from Openwave's Web site at www.openwave.com. The Company assumes no obligation to update the forward-looking statements included in this document.

NOTE: Openwave and the Openwave logo are trademarks and or registered trademarks of Openwave Systems Inc. All other trademarks are the properties of their respective owners.

CONTACT:
Openwave Systems Inc. Openwave Systems Japan K.K.
Michele Landry Emi Inoue/Hiroaki Tsuneyama
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