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REDWOOD CITY, Calif. and MUNICH, Germany (January 31, 2000) - Siemens and Phone.com, Inc. (Nasdaq:PHCM) announced that Hong Kongs Mobile Op-erator Hutchison Telecommunications (Hong Kong) Limited has selected Siemens Informa-tion and Communication Networks Group to implement the WAP (Wireless Application Pro-tocol) platform for innovative wireless Internet based services. Under the terms of the agreement, Siemens has provided Hutchison Telecom a complete WAP solution, including the Phone.com UP.Link server suite, which has allowed Hutchison Telecom to provide innovative wireless Internet services to its mobile customers. Being a turn-key pro-vider, Siemens has implemented a complete WAP solution comprising all infrastructure components and WAP platform. Already, more than 20 GSM operators in Europe and Asia are using the complete WAP solution from Siemens and Phone.com.

Siemens has integrated Phone.coms UP.Link server solution into Hutchison Telecoms mo-bile networks which enables Hutchison Telecom to offer mobile customers easy access to a broad variety of Hutchison Telecoms online information services and applications. The services can be accessed through mobile phones equipped with a WAP-browser.

The Wireless Application Protocol is an open, global specification that empowers mobile users with wireless devices to easily access and interact with online information and serv-ices. WAP enables wireless devices to quickly access Web sites specifically designed for mobile phones and terminals and optimizes the information displayed on the mobile phone display. Through WAP, the user cannot only access typical public information such as sports, news and email, but also can get protected access to corporate applications deliver-ing user-specific information over the mobile network. The user could check, for instance, the cost, length, destination and time of call. Furthermore, WAP enables a multitude of other services, from games to advanced online Personalized Information Management (PIM) func-tionality such as constantly updated calendar and address book services, which can be eas-ily accessed through a mobile phone. WAP based services are also an ideal way to open and combine the various possibilities of IN (Intelligent Network) based mobile services.

Besides the typical circuit-switched data communication available today on mobile networks, GPRS (General Packet Radio System) represents the future packet data service, which will enhance WAP-based services. GPRS is expected to be commercially available in the third quarter of next year by Hutchison Telecom.

About Hutchison Telecommunications (Hong Kong) Limited
Hutchison Telecommunications (Hong Kong) Limited is a subsidiary of Hutchison Whampoa Group. The Company is a market leader in Hong Kongs telecom industry providing compre-hensive communications services including mobile phone (simultaneously operating GSM900/GSM1800 Dual Band and CDMA digital networks), paging, international calling, fixed network and the Internet services.

About Siemens, Information and Communication Networks Group
The Information and Communications business segment is part of Siemens AG, a global powerhouse in electrical engineering and electronics with more than $ 75 billion in sales. Information and Communications consists of the three groups Information and Communica-tion Networks (59,000 employees, $ 13 billion sales), Information and Communication Prod-ucts (33,000 employees, $ 11 billion sales) and Siemens Business Services (21,000 em-ployees, $ 4 billion sales).

Information and Communication Networks is an integral part of Information and Communica-tions. As Solution Provider of voice, data, and mobile radio networks, Information and Com-munication Networks has a comprehensive product portfolio - producing and supplying complete systems, enterprise products, switching and transmission equipment - and many years of consulting experience in planning, setting up, and operating networks. Within its overall strategy of "Convergence - Creating A Universe of One" the Siemens Information and Communication Networks Group is pursuing three main initiatives for the next genera-tion of communication: innovation in IP-driven voice and data communications, evolution from GSM to third-generation mobile voice and data networks and applications, and cus-tomer-oriented end-to-end solutions and service/integration support for future customer re-quirements. Siemens provides products and tailor-made solutions which ensure problem-free Internet traffic and the integration of different networks into one convergent network, utilizing legacy network infrastructures. Further information can be found on the Internet at http://www.siemens.com/ic/networks.

Siemens is a provider of complete GSM systems. This is made possible by the broad prod-uct portfolio, from manufacturing to delivering turnkey solutions, mobile devices, switching stations and transmission systems. Siemens also offers comprehensive experience in plan-ning, building and operating GSM systems. As a worldwide leader, Siemens has already provided GSM systems to more than 140 network operators in over 70 countries. It is esti-mated that one in three GSM telephone calls worldwide is made on a Siemens system. More information about Siemens solutions for mobile and intelligent networks can be found on the Internet at http://www.siemens.de/ic/networks/gg/ca/.

About Phone.com
Phone.com, Inc. (Nasdaq:PHCM) is a leading provider of software and services that enable the delivery of Internet-based information 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, London 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 serv-ices 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 relation-ships. Further information regarding these and other risks are included in Phone.coms Form 10-Q for quarter ended September 30, 1999, in its prospectus dated November 16, 1999 and in its other filings with the Securities and Exchange Commission.

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