Initially, the wireless Internet service from Iusacell is accessible using Motorolas Startac 7860 Internet-enabled phones, which utilize the embedded Phone.com UP.Browser microbrowser. These phones operate on Iusacells CDMA network.
By using the Phone.com UP.Link and UP.Browser, Iusacells subscribers have access to a broad range of wireless services, including Internet access, mobile email, and Info-on-Demand servicesincluding financial news and weather, as well as Personal Information Management services such as personal organizer, and calendar functions. Iusacell is providing localized content through Alo.com, a Mexican Internet provider.
Were excited to use the UP.Link server and Internet-enabled phones to provide leading edge wireless Internet services to our subscribers, said Fulvio V. del Valle, President & Director General of Iusacell. We see this as just the beginning of many new, advanced services to be offered to our subscribers.

As the demand and popularity for wireless Internet access grows, Phone.com is poised and committed to help network operators such as Iusacell deliver new services with the most benefit to their subscribers, said Chuck Parrish, Executive Vice President for Phone.com. Iusacells growth combined with Phone.coms innovative and mature products will quickly provide wireless subscribers with state-of-the-art capabilities.
About Iusacell
Grupo Iusacell, S.A. de C.V. (Iusacell, NYSE: CEL; BMV: CEL), is a leading independent telecommunications company in Mexico. It provides wireless cellular service in four of Mexicos nine regions in the central portion of Mexico (including Mexico City) covering a total of 68 million POPs, representing approximately 69% of the countrys total population. Iusacell is under the management and operating control of subsidiaries of Bell Atlantic Corporation (NYSE: BEL).
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, and December 31, 1999, 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]