Press Release

February 18, 2003

America Movil and Research In Motion To Bring BlackBerry Wireless Platform To Latin America For The First Time

Mexico and Waterloo, ON - America Movil and Research In Motion (RIM) (Nasdaq: RIMM; TSX: RIM) today announced plans to bring the BlackBerry™ wireless platform to Latin America for the first time. The companies initially plan to deliver BlackBerry to mobile professionals in Mexico using Telcel's nationwide GSM/GPRS network. Telcel is a wholly-owned subsidiary of America Movil.

The introduction of BlackBerry in Mexico will provide Telcel customers the benefits of an industry leading voice and data handheld with an open standards-based platform. BlackBerry offers secure, wireless access to corporate email and data as well as synchronized personal information management tools, which is what corporate customers in Latin America are seeking.

Telcel launched its GSM/GPRS service in October 2002. The company ended the year with over 500,000 GSM subscribers and currently offers coverage in more than 70 cities throughout Mexico, with nationwide deployment by the end of 2003.

BlackBerry is an integrated wireless platform designed to meet the specific needs of both mobile professionals and IT departments. With BlackBerry, mobile professionals get effortless access to their important information and communications while on the go and IT departments get security, centralized administration and extensibility in a proven wireless platform.

About América Móvil

America Movil is the leading provider of wireless services in Latin America. It has more than 32 million wireless subscribers across the continent. Its Mexican subsidiary Telcel is the market leader in Mexico with more than 20 million subscribers, providing coverage in over 100,000 towns and cities in the country.

About Research In Motion (RIM)

Research In Motion is a leading designer, manufacturer and marketer of innovative wireless solutions for the worldwide mobile communications market. Through the development of integrated hardware, software and services that support multiple wireless network standards, RIM provides platforms and solutions for seamless access to time-sensitive information including email, phone, SMS messaging, Internet and intranet-based applications. RIM technology also enables a broad array of third party developers and manufacturers to enhance their products and services with wireless connectivity. RIM's portfolio of award-winning products, services and embedded technologies are used by thousands of organizations around the world and include the BlackBerry™ wireless platform, the RIM Wireless Handheld™ product line, software development tools, radio-modems and software/hardware licensing agreements. Founded in 1984 and based in Waterloo, Ontario, RIM operates offices in North America, Europe and Asia Pacific. RIM is listed on the Nasdaq Stock Market (Nasdaq: RIMM) and the Toronto Stock Exchange (TSX: RIM). For more information, visit www.rim.com or www.blackberry.com.

The BlackBerry and RIM families of related marks, images and symbols are the exclusive properties of Research In Motion Limited. All other brands, products and company names mentioned herein may be trademarks or registered trademarks of their respective holders.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
Forward-looking statements in this news release are made pursuant to the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995. Investors are cautioned that such forward-looking statements involve risks and uncertainties, including, without limitation, whether RIM and Telcel Mexico will enter into a definitive agreement, risks relating to possible product defects and product liability, risks related to international sales and potential foreign currency exchange fluctuations, continued acceptance of RIM's and Telcel Mexico's products, increased levels of competition, technological changes, dependence on intellectual property rights and other risks detailed from time to time in RIM's and Telcel Mexico's periodic reports filed with the United States Securities and Exchange Commission and other regulatory authorities. Telcel Mexico and RIM assume no obligation to update the forward-looking information contained in this press release, except as otherwise required by applicable law.