Press Release

September 23, 2004

KPN Launches BlackBerry Enterprise Solution In The Netherlands

Waterloo, ON and Den Haag, The Netherlands - KPN and Research In Motion (RIM) (Nasdaq: RIMM; TSX: RIM) today announced the introduction of the BlackBerry Enterprise Solution™ in the Netherlands.

BlackBerry® is an industry-leading wireless solution that gives mobile professionals the freedom to stay connected to people and information while on the go. BlackBerry Wireless Handhelds™ feature an integrated mobile phone and provide 'always-on' access to corporate email, calendar and organizer applications. Users can now stay in touch easier than ever by phone and email (including support for attachment viewing). Other corporate data applications can also be securely extended to BlackBerry users on the move.

BlackBerry from KPN integrates seamlessly with the corporate network. The unique 'push' technology of BlackBerry delivers email messages and appointments automatically to the handheld. Users do not need to retrieve the messages themselves. BlackBerry Enterprise Server™ software supports both Microsoft® Exchange and IBM Lotus® Domino™ (Novell GroupWise support is expected later this year). Thanks to the advanced BlackBerry security architecture with end-to-end encryption, the solution also meets strict IT security requirements.

KPN offers a choice of two BlackBerry Wireless Handhelds - the BlackBerry 7230™ and the BlackBerry 7730™. Both handhelds combine the capabilities of wireless email, data and phone in one powerful and convenient device. Each BlackBerry handheld also features a clear, high-resolution color screen, an integrated 'QWERTY' keyboard and an easy-to-use navigation trackwheel on the side of the device. The handhelds are tri-band (900/1800/1900 MHz) to support international roaming. The BlackBerry 7730 features a larger screen, while the BlackBerry 7230 offers a more compact design.

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 to data. 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.

About KPN

For more information about KPN visit www.kpn.com.

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. When used herein, words such as "intend" and similar expressions are intended to identify forward-looking statements. Forward-looking statements are based on assumptions made by and information available to Research In Motion Limited. Investors are cautioned that such forward-looking statements involve risks and uncertainties. Important factors that could cause actual results to differ materially from those expressed or implied by such forward looking statements include, without limitation, possible product defects and product liability, risks related to international sales and potential foreign currency exchange fluctuations, the initiation or outcome of litigation, acts or potential acts of terrorism, international conflicts, significant fluctuations of quarterly operating results, changes in Canadian and foreign laws and regulations, continued acceptance of RIM's products, increased levels of competition, technological changes and the successful development of new products, dependence on third-party networks to provide services, dependence on intellectual property rights and other risks and factors detailed from time to time in RIM's periodic reports filed with the United States Securities and Exchange Commission, and other regulatory authorities. The Company has no intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

The BlackBerry and RIM families of related marks, images and symbols are the exclusive properties and trademarks of Research In Motion Limited. RIM, Research In Motion and BlackBerry are registered with the U.S. Patent and Trademark Office and may be pending or registered in other countries. All other brands, product names, company names, trademarks and service marks are the properties of their respective owners.