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Phone.com, Siemens and StarHub Showcase the Latest Developments in Mobile Internet Delivery

REDWOOD CITY, Calif. May 24, 2000 Phone.com, Inc. (Nasdaq:PHCM), a leading provider of mobile Internet software and services, along with Siemens Information and Communication Mobile and Singaporean wireless operator StarHub Telecom will jointly host the first Wireless Application Protocol (WAP) seminar in Singapore, May 24-25. During the two-day event, entitled Innovating the Mobile World, all three partners will provide speakers and tutorials that will address the business models and technical issues of delivering wireless Internet content and services in Singapore.
Innovating the Mobile World is structured to ignite the mobile Internet in Singapore, while educating wireless network operators, software developers and Internet content providers about the latest tools and opportunities in the Singaporean and greater Asian market. Attendees will be introduced to recently developed WAP technology and applications and will also be briefed by senior executives from the hosting companies about topics that include: the current wireless market in Singapore; enabling the mobile Internet; WAP trends; WAP security; and mobile commerce.

Day Two of the seminar will feature an all-day training session to give attendees a series of hands-on tutorials addressing each stage of developing and implementing wireless Internet applications. The session will be led by Phone.com, and will cover WML, both an overview and introduction to the various components and useful software tools; the development process of International applications; variables and contexts; content management and security; and sending notifications.
Since its inception, Phone.com has been committed to educating wireless operators and software developers about the most innovative tools and protocols for creating the mobile Internet, said Tony Miranzadeh, vice president and general manager of Asia Pacific and Latin America for Phone.com. We have created software, such as the UP.SDK, to provide a solution for rapid implementation of wireless applications and prevent the creation of a digital divide in the mobile Internet space.
We have enjoyed working with Phone.com over the last few years to provide international wireless carriers and their subscribers with complete WAP solutions, said Christian Unterberger, Vice President of Siemens Information and Communication Mobile for Singapore. Combining our efforts again for this seminar along with StarHub, will benefit the entire wireless industry as we help all players ramp up to create accurate and useful applications for mobile phone users.
Innovating the Mobile World will not only showcase the platform created by the wireless pioneers Phone.com and Siemens, it will explore the best of breed applications being built to utilize the platform to its utmost advantage, said Mr. Wee Way Kiat, GM, Mobility, StarHub. StarHub is a strong advocate of further developing WAP technologies, passing on the benefits and results to our subscribers. We intend to lead and innovate in the WAP area by fostering a creative environment among the leading players in the market.
About StarHub
StarHub is Singapores new operator for both fixed and mobile telecommunications services. StarHub is positioning itself to offer customers in Singapore a comprehensive info-communications solutions package for all their communications requirements including fixed and mobile phone to Internet services.

StarHub aims to be the leading innovator of info-communications solutions, enhancing customer

choices and their quality of life. It has built a new generation, integrated broadband info-communications network that is principally fibre-based. This new network infrastructure in Singapore will have the capability to provide true fixed and mobile converged services on an integrated platform offering customers with access to the latest communications technology applications. More information on StarHub can be found on http://www.StarHub.com.sg

About Siemens
The Information and Communication Mobile Group (20,000 employees, sales of 5 billion euros) of Siemens AG covers the entire mobile telephone business, both in terms of communication devices and network technology and applications. The product range for communication devices comprises mobile phones and ISDN cards, through to mobile organizers and cordless and corded telephones, while for infrastructure the range includes the entire network technology, from base stations through switching systems and up to applications and intelligent networks. Further information on this Siemens Group is available on the internet at http://www.siemens.de/ic/mobile

About Phone.com
Phone.com, Inc. (Nasdaq:PHCM) is a leading provider of software, applications, and services that enable the delivery of Internet-based information and voice services to mass-market wireless telephones. Using its software, wireless subscribers have access to Internet- and corporate intranet-based services, including email, news, stocks, weather, travel and sports. In addition, subscribers have access via their wireless telephones to network operators intranet-based telephony services, which may include over-the-air activation, call management, billing history information, pricing plan subscription and voice message management. Phone.com is headquartered in Silicon Valley, California and has regional offices in Belfast, Copenhagen, Hong Kong, London, Madrid, Paris, Seoul and Tokyo. Visit http://www.phone.com for more information.

Except for the historical information contained herein, the matters discussed in this news release are forward-looking statements involving risks and uncertainties that could cause actual results to differ materially from those in such forward-looking statements. Potential risks and uncertainties include, but are not limited to, Phone.coms limited operating history, potential fluctuations in Phone.coms operating results, uncertainties related to Phone.coms long sales cycle and reliance on a small number of customers, Phone.coms dependence on the acceptance of its products by network operators and wireless subscribers, Phone.coms ability to adequately address the rapidly-evolving market for delivery of Internet-based services through wireless telephones, the need to achieve widespread integration of Phone.coms browser in wireless telephones, competition from companies with substantially greater financial, technical, marketing and distribution resources and the ability of Phone.com to manage a complex set of engineering, marketing and distribution relationships. Further information regarding these and other risks are included in Phone.coms Form 10-Q for quarters ended September 30, 1999, December 31, 1999, and March 31, 1999, and in its prospectus dated November 16, 1999 and in its other filings with the Securities and Exchange Commission.

The Phone.com name and logo and the family of terms carrying the UP. prefix are trademarks of Phone.com, Inc. All Rights Reserved. All other company, brand and product names may be marks that are the sole property of their respective owners.

For more information please contact:
Phone.com, Inc.Rowan Benecke PR21 +1 (415) 369 8102 [email protected] Phone.com (Europe) LimitedKylie Trevitt Text 100 Ltd. +44 (0) 181 242 [email protected] Phone.com Japan K.K.Masaaki YamamotoPhone.com Japan K.K.+81 3 5325 [email protected]
SiemensFlorian [email protected] StarHubEric LohTel: (65) 825-5171Fax: (65) 721-5015Email: [email protected]