Mobistar and RIM Launch EDGE-Enabled BlackBerry Device in Belgium

Business Wire, March 23, 2006

BRUSSELS, Belgium & WATERLOO, Ontario -- BlackBerry 8700f Leverages the Benefits of Belgium Carrier's EDGE Network

Mobistar (EURONEXT BRUSSELS:MOBB) and Research In Motion (RIM) (NASDAQ:RIMM)(TSX:RIM) today announced the launch of the BlackBerry(R) 8700f(TM) in Belgium, the first BlackBerry device designed to leverage Mobistar's national EDGE network. The BlackBerry 8700f is available immediately for all Mobistar customers.

The BlackBerry 8700f is a quad-band device that operates on Mobistar's GSM/GPRS/EDGE network and offers premium phone features such as dedicated 'end,' 'send' and 'mute' keys, smart dialing, conference calling, speed dial, call forwarding, as well as speakerphone and Bluetooth(R) support for hands-free use with wireless headsets and car kits.

The BlackBerry 8700f offers a high resolution landscape QVGA (320 x 240) LCD screen that supports more than 65,000 colors and uses active matrix transmissive technology to deliver vivid graphics. In addition, the BlackBerry 8700f features an intelligent light-sensing technology that automatically adjusts the brightness of the screen and keyboard to optimize visibility in outdoor, indoor and dark environments.

"The BlackBerry 8700f is a significant innovation and its launch is an important step forward in Mobistar's strategic relationship with Research In Motion," said Bernard Moscheni, CEO of Mobistar. "BlackBerry remains an excellent choice for users who want an unrivalled data and voice experience to keep them connected and productive while they are away from their desk."

"We are delighted to work with Mobistar to make the BlackBerry 8700f available in Belgium," said Craig McLennan, Vice President, Orange Group Business Unit, Research In Motion. "The BlackBerry 8700f leverages the benefits of Mobistar's powerful EDGE network and the industry's most advanced device technology, software and services to deliver an optimized mobile experience."

The BlackBerry 8700f supports wireless email, phone, text messaging, web browsing, organizer and other data applications, and features a completely re-engineered BlackBerry device platform, 64 MB of flash memory, 16 MB SDRAM and an Intel(R) XScale(R) cellular processor to deliver enhanced performance, without compromising battery life.

For corporate customers, BlackBerry Enterprise Server(TM) software, tightly integrates with Microsoft(R) Exchange, IBM Lotus(R) Domino(TM) and Novell GroupWise(R) and works with existing enterprise systems to enable secure, push-based wireless access to email and other corporate data.

For individuals and smaller businesses, BlackBerry Internet Service(TM) allows users to access up to ten corporate and/or personal email accounts (including Microsoft Exchange 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(R) wireless platform, the RIM Wireless Handheld(TM) 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 Mobistar

Mobistar (EURONEXT BRUSSELS:MOBB) is one of the main actors in the world of telecommunications in Belgium, active in mobile telephony, fixed telephony, ADSL and on other markets with a strong growth potential (data transmission, etc.). Mobistar is part of the Orange Group which brings together most of the mobile activities of France Telecom. Mobistar is listed on the Brussels Stock Exchange. On 31 December 2005 Mobistar counted a total of 2,912,806 active customers for mobile telephony.

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.