Press Release

November 29, 2005

PERSONAL and RIM Introduce BlackBerry to Mobile Professionals in Argentina

Buenos Aires, Argentina and Waterloo, Ontario - PERSONAL and Research In Motion (RIM) (Nasdaq: RIMM; TSX: RIM) today announced plans to launch the BlackBerry® wireless platform in Argentina. PERSONAL Argentina plans to offer the BlackBerry 7290™, the BlackBerry 7100g™, BlackBerry Enterprise Server™ and BlackBerry Internet Service™ to mobile professionals in Argentina, beginning in early December.

PERSONAL is the first cellular operator to launch BlackBerry in Argentina. Historically, PERSONAL has been a leader in the introduction of innovative technology in the country, from Turbo Mail to TV Movil. The BlackBerry solution will become a competitive advantage that allows PERSONAL's customers to improve efficiency in corporate wireless communications,” said PERSONAL General Manager, Guglielmo Noya.

“The popularity of BlackBerry continues to grow around the world and we are extremely pleased to be working with PERSONAL to bring BlackBerry to Argentina,” said Mark Guibert, Vice President, Corporate Marketing at Research In Motion. “BlackBerry offers a unique mobile experience that can significantly enhance flexibility and productivity for individuals and corporations alike.”

The Java-based BlackBerry 7290 and BlackBerry 7100g features include:

• Phone, email, text messaging, browser and organizer applications in a single wireless handheld
• High resolution display that supports more than 65,000 colors while maintaining exceptional battery life
• 32 MB flash memory plus 4 MB SRAM for application and data storage
• Java™ development environment for additional applications based on open standards
• Push-based wireless connectivity
• Full-featured connected organizer
• Integrated attachment viewing (including support for popular file formats such as Word, Excel, PowerPoint, WordPerfect, PDF ASCII, JPEG, GIF, BMP, TIFF and PNG)
• Cradle-free wireless synchronization of email and organizer
• Compact form factor with a light and comfortable feel
• Bluetooth® support for wireless headsets and car kits
• Quad-band support for 850/900/1800/1900 MHz GSM/GPRS wireless networks around the world

The BlackBerry 7100g also incorporates SureType™ keyboard technology. SureType effectively converges a phone keypad and a QWERTY keyboard to fit elegantly within the size of a traditional wireless phone design. Through an integrated keyboard and software system, SureType provides users with an instinctively familiar look and feel and enables them to dial phone numbers and type messages quickly, accurately and comfortably.

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.

There are currently more than four million BlackBerry subscribers around the globe.

About PERSONAL

PERSONAL is one of the main cellular operators in Argentina, with 5 million customers in the country. PERSONAL offers mobile services trough TDMA and GSM technologies. The company is in operation since 1996 and its main shareholder is Telecom Argentina S.A.

PERSONAL offers innovative cellular services such us Virtual Private Networks, wireless High Speed connection (GPRS and EDGE), MMS, Mobile TV with on line streaming, video download, corporate email, ringback tones and m-commerce solutions. Additionally, PERSONAL has local and international strategic alliances and commercial agreements that allow the company to offer exclusive services to its customers.

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.