CTIA - Orlando April 03, 2007

T-MOBILE CZECH REPUBLIC SURFS OVER TO MUSIWAVE

T-MOBILE CZECH REPUBLIC SURFS OVER TO MUSIWAVE FOR
FULL TRACK MUSIC DOWNLOADS

Web Service to Offer More Than 400,000 Tracks

CTIA Wireless 2007, ORLANDO, FL – March 27, 2007 – Musiwave, an Openwave company (Openwave Systems Inc. NASDAQ: OPWV), and a leading provider of mobile music entertainment services to operators and media companies worldwide, today announced that T-Mobile Czech Republic selected Musiwave to provide a full-track online music store. The t-music PLAY service enables users to browse and purchase tracks which are then available for download onto a PC, for transfer to mobile devices. The service is based on a fixed and mobile converged platform, using SIM-based billing. For the first time in the Czech Republic, users can access features that enable services such as recommending and gifting tracks to their friends for both PC and mobile downloads.

The service is available on the popular Czech Republic music portal www.t-music.cz and integrated with the equally popular television and radio chart of the same name. Over the air delivery to the mobile devices will be available in the second phase of the project.

“Our customers are looking for fast and simple ways to find, take and play their favorite songs at home, at work or ‘on the go.’ With Musiwave we are able to deliver a huge selection of fresh and engaging tracks with an interface that is familiar and easy-to-use,” said Michal Nemec, vice president of Portal & Content Services for T-Mobile Czech Republic. “Musiwave's industry knowledge and proven expertise in delivering top-quality, successful mobile music offerings made it the obvious choice.”

Musiwave’s service offers a catalog of more than 400,000 songs from top record labels such as Warner, EMI, SonyBMG, Universal and tracks from numerous well-known independent labels. A customized T-Mobile web store allows customers to purchase and download full tracks on their PC and transfer them to compatible mobile devices and USB MP3 players. This offering is currently available on 24 mobile handsets.

“We are excited to be providing terrific access to some of the very latest full-track downloads to T- Mobile’s customers in the Czech Republic,” said Guillaume Decugis, vice president and general manager, Musiwave. “Musiwave is dedicated to enabling operators to deliver exciting, personalized music packages to their subscribers, and this deployment with one of the world’s biggest operator brands reinforces our leading position in global mobile music delivery.”

Musiwave provides mobile music entertainment services to over 30 mobile operators in 25 countries including Vodafone, T-Mobile, Telefonica, TELUS, Orange, SFR, 3 UK, 3 Italy and Amena.

About Musiwave and Openwave
Musiwave, an Openwave company (Openwave Systems Inc. NASDAQ: OPWV), is a leading provider of mobile music entertainment solutions, including software, marketing and content management, to operators and media companies worldwide. For more information, please visit www.musiwave.net.

Openwave Systems Inc. (Nasdaq: OPWV) is the leading independent provider of software solutions that ignite mobility for the communications and media industries. Openwave empowers its customers to rapidly transform their business by sparking new revenue streams and market opportunities, building loyal subscriber communities and reducing operational costs. Openwave’s broad range of IP-based handset-to-network solutions enable the rapid launch of information, communication and entertainment services across networks and devices and include handset software, content delivery, adaptive messaging, location, music and video services. Openwave is a global company headquartered in Redwood City, California. For more information please visit www.openwave.com.

About T-Mobile Czech Republic a.s.
T-Mobile Czech Republic a.s. has been operating in the Czech market since 1996. Since its establishment, the company has placed emphasis on the quality of services offered and excellent customer service. As of 31 December 2006, more than 5 million customers were using T-Mobile services.

T-Mobile Czech Republic a.s. operates a public mobile communications network on the GSM standard in the 900 and 1800 MHz bands and is also authorized to operate a UMTS network. T-Mobile was the first operator in the Czech Republic to launch this third-generation technology on 19 October 2005 under the name Internet 4G.

T-Mobile is a member of the international telecommunications group T-Mobile International. Thanks to T-Mobile’s international presence, customers can count on the worldwide availability of their favorite services and take advantage of unified, favorable prices of calls when abroad.

For more information about the company, please visit www.t-press.cz or www.t-mobile.cz.
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Cautionary Note Regarding Forward Looking Statements
This release contains forward-looking statements relating to expectations, plans or prospects for Musiwave, an Openwave Systems Inc. company, 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. Notwithstanding changes that may occur with respect to matters relating to any forward looking statements, Openwave does not expect to, and disclaims any obligation to, update such statements. Openwave, however, reserves the right to update such statements or any portion thereof at any time for any reason.

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 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; (b) the ability to develop and commercialize new products; (c) industry and customer adoption and acceptance of new products; (d) 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; (e) increased global competition and pricing pressure on our products; (f) technological changes and developments; and (g) general risks of the Internet and wireless and wireline telecommunications sectors.

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, 2006, and any 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 website at www.openwave.com.

Openwave and the Musiwave logo are trademarks of Openwave Systems Inc. All other trademarks are the properties of their respective owners.


For more information please contact:
Openwave Systems Inc.
Trisha Mirel
Public Relations
trisha.mirel@openwave.com
Tel: +1-650-480-5509

Bite Communications for Openwave Systems
Melanie Antonucci
Melanie.Antonucci@bitepr.com
Tel: +44 208 834 3419