Press Release

November 29, 2005

RIM and TSTT to Launch BlackBerry in Trinidad and Tobago

Port of Spain, Trinidad and Waterloo, Ontario - Telecommunications Services of Trinidad and Tobago (TSTT) and Research In Motion (RIM) (Nasdaq: RIMM; TSX: RIM) today announced plans to launch the BlackBerry® wireless solution next month in Trinidad and Tobago, one of the key commercial hubs in the Caribbean, TSTT will offer the Blackberry 7290™, the BlackBerry 7100g™, BlackBerry Enterprise Server™ v4.0 and BlackBerry Internet Service™ in conjunction with TSTT’s world-class GSM/GPRS mobile network.

“BlackBerry is an important addition to our portfolio of solutions,” said Carlos Espinal, Chief Executive Officer at TSTT.   “TSTT operates the country’s largest and most advanced mobile network and business leaders across all sectors in Trinidad and Tobago rely on us to provide them with leading communications and productivity solutions. This will give TSTT’s customers wireless data services that are superior to anything else available in Trinidad and Tobago.”

“We are very pleased to be working with TSTT to bring BlackBerry to this important regional market,” said Mark Guibert, Vice President, Corporate Marketing at Research In Motion. “BlackBerry will enable greater mobility and productivity for government, corporate and individual customers in Trinidad and Tobago.”

The BlackBerry 7290 and BlackBerry 7100g are both quad band mobile devices (850, 900, 1800 and 1900 MHz) that support wireless access to email, phone, organizer, Internet browser, text messaging and corporate data applications. Both devices incorporate Bluetooth® support for hands-free calls with a wireless headset or car kit.  The BlackBerry 7290 features a full QWERTY keyboard while the BlackBerry 7100g features the popular SureType™ keyboard technology that effectively converges a phone keypad and a QWERTY keyboard to fit elegantly within the size constraints of a traditional 'candy bar' phone design.  Both devices also enable intuitive navigation for easy handling on the go.

   “Being the first to bring BlackBerry to Trinidad and Tobago solidifies TSTT’s position as the industry leader for communications technology in the country. Putting the best-in-class services and technology of BlackBerry into the hands of mobile professionals will further fuel T&T’s strong economic performance and unearth new commercial opportunities” said Espinal.

For corporate customers, BlackBerry Enterprise Server™ tightly integrates with Microsoft® Exchange, IBM Lotus® Domino™ and Novell GroupWise™ enterprise systems to enable secure, push-based, wireless access to e-mail and other corporate data.

For individuals and smaller businesses, BlackBerry Internet Service™ allows users to access up to ten corporate and/or personal email accounts (including Microsoft Exchange, IBM Lotus Domino and most popular ISP email accounts) from a single device.

 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.

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.