� Operator customers grew from 58 to 77, serving in aggregate 240 million voice subscribers
� Phone.com active mobile Internet subscribers grew from 2 million to over 4.1 million
� Total UP.Browser-enabled phones shipped doubled to 12 million
� Phone.coms Email and Organizer application users grew to over 3 million
� Registered developers creating Phone.com-compatible Web sites and applications grew from 62,000 to 110,000

The huge growth in the shipment of UP.Browser-enabled phones during the quarter signifies a turning point for subscriber adoption of the wireless Internet. As these phones are sold to consumers, additional subscribers become active, and generate traffic for both wireless operators and mobile Internet information and commerce Web sites.

The phenomenal results of the quarter show that we are in the midst of mass-market adoption of wireless Internet, and consequently our market-leading infrastructure software and applications, said Alain Rossmann, chairman and chief executive officer of Phone.com. With over half of the worlds voice subscriber base already accessible to us as potential customers and incredible growth in shipments of Phone.com browser-enabled phones, we are in a superior position to capitalize on the accelerated demand for the wireless Internet.

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, Hong Kong, London, Madrid, Seoul, Rome 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, 2000, in its prospectus dated November 16, 1999 and in its other filings with the Securities and Exchange Commission.

Phone.com, the Phone.com logo and the family of terms carrying the UP. prefix are trademarks of Phone.com, Inc. All other trademarks and registered trademarks are the properties of their respective owners.

For more information please contact:
Phone.com, Inc.Rowan Benecke PR21 +1 (415) 369 8102 [email protected] Phone.com (Europe) LimitedVicky Ryce Phone.com, Inc. +44 1442 288 [email protected] Phone.com Japan K.K.Masaaki YamamotoPhone.com Japan K.K.+81 3 5325 [email protected]