<SUBMISSION>
<ACCESSION-NUMBER>0001070235-04-000142
<TYPE>6-K
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20041221
<FILING-DATE>20041221
<DATE-OF-FILING-DATE-CHANGE>20041221
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>RESEARCH IN MOTION LTD
<CIK>0001070235
<ASSIGNED-SIC>3661
<IRS-NUMBER>000000000
<FISCAL-YEAR-END>0228
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>6-K
<ACT>34
<FILE-NUMBER>000-29898
<FILM-NUMBER>041215794
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>295 PHILLIP ST
<STREET2>WATERLOO
<CITY>ONTARIO CANADA
<STATE>A6
<ZIP>00000
<PHONE>5198887465
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>295 PHILLIP STREET
<STREET2>WATERLOO, ONTARIO N2L 3W8
<CITY>ONTARIO
<STATE>A6
<ZIP>N2L 3W8
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>pr122104.htm
<TEXT>
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     <!-- Control Number: pr050404                                                         -->
     <!-- Rev Number:     001                                                              -->
     <!-- Client Name:    Research In Motion Limited                                       -->
     <!-- Project Name:   3 Press Releases                                                 -->
     <!-- Firm Name:      Investor Relations                                               -->
     <TITLE>PR122104</TITLE>
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<BODY>









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<TABLE WIDTH=600 CELLSPACING=0 CELLPADDING=0 BORDER=0>
<TR VALIGN=TOP>
<TD><div align="center"><font face="Times New Roman, Times, Serif" size=2><u><b>FORM
  6-K</b></u></font><BR><A NAME=A003></A></div><P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>SECURITIES
AND EXCHANGE COMMISSION </FONT></P>

<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Washington, D.C. 20549 </FONT></P>

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<A NAME=A005></A>
<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Report of Foreign
Private Issuer </FONT></P>

<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Pursuant to Rule 13a-16
or 15d-16 of </FONT></P>

<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>the Securities Exchange Act
of 1934 </FONT></P>
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</TD>
</TR>
</TABLE>
<BR>
<p>&nbsp;</p>
<table width="600" border="0">
  <tr>
    <td width="230">For the month of</td>
    <td width="236"><b>December</b>
      <hr>
    </td>
    <td width="112"><b>2004</b>
      <hr>
    </td>
  </tr>
  <tr>
    <td width="230"><font face="Times New Roman, Times, Serif" size=2>Commission
      File Number</font></td>
    <td width="236"><b><font face="Times New Roman, Times, Serif" size=2>000-29898
      </font></b>
      <hr>
      <b><font face="Times New Roman, Times, Serif" size=2> </font></b></td>
    <td width="112">
      &nbsp;<hr>
    </td>
  </tr>
  <tr>
    <td colspan="3">
      <div align="center"> <font face="Times New Roman, Times, Serif" size=3><b>Research
        In Motion Limited</b> </font>
        <hr>
        (Translation of registrant&#146;s name into English)</div>
    </td>
  </tr>
  <tr>
    <td colspan="3">
      <div align="center">295 Phillip Street, <br>
        Waterloo, Ontario, Canada <br>
        N2L 3W8 </div>
    </td>
  </tr>
  <tr>
    <td colspan="3">
      <div align="center"><font face="Times New Roman, Times, Serif" size=2>(Address
        of principal executive offices) </font></div>
    </td>
  </tr>
</table>

<P>&nbsp;</P>

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<TABLE WIDTH=600 CELLSPACING=0 CELLPADDING=0 BORDER=0>
<TR VALIGN=TOP>
<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate
by check mark whether the registrant files or will file annual reports under cover Form
20-F or Form 40F.  </FONT></TD></TR>
</TABLE>
<div align="center"><BR>
  <table width="427" border="0">
    <tr>
      <td width="200"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Form 20-F
        ___________</font></td>
      <td width="217"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Form 40-F_____<u>X</u>_______</font></td>
    </tr>
  </table>
  <!-- MARKER FORMAT-SHEET="Para Indent 0" FSL="Project" -->
</div>
<br>
<TABLE WIDTH=600 CELLSPACING=0 CELLPADDING=0 BORDER=0>
<TR VALIGN=TOP>
<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate
by check mark         if the registrant is submitting the Form&nbsp;6-K in paper as
permitted         by Regulation&nbsp;S-T Rule&nbsp;101(b)(1):________________  </FONT></TD></TR>
</TABLE>
<BR>

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<TABLE WIDTH=600 CELLSPACING=0 CELLPADDING=0 BORDER=0>
<TR VALIGN=TOP>
<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate
by check mark if   the registrant is submitting the Form&nbsp;6-K in paper as permitted
by Regulation&nbsp;S-T   Rule&nbsp;101(b)(7):________________  </FONT></TD></TR>
</TABLE>
<BR>

<!-- MARKER FORMAT-SHEET="Para Indent 0" FSL="Project" -->
<TABLE WIDTH=600 CELLSPACING=0 CELLPADDING=0 BORDER=0>
<TR VALIGN=TOP>
<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate
by check mark whether by furnishing the information contained in this Form, the
registrant is also thereby furnishing the information to the Commission pursuant to Rule
12g3-2(b) under the Securities Exchange Act of 1934.  </FONT></TD></TR>
</TABLE>
<div align="center"><BR>
  <table width="441" border="0">
    <tr>
      <td> <FONT FACE="Times New Roman, Times, Serif" SIZE=2>Yes__________________</font></td>
      <td><FONT FACE="Times New Roman, Times, Serif" SIZE=2>No________<u>X</u>__________</font></td>
    </tr>
  </table>
  <br>
  <!-- MARKER FORMAT-SHEET="Para Indent 0" FSL="Project" -->
</div>
<TABLE WIDTH=600 CELLSPACING=0 CELLPADDING=0 BORDER=0>
<TR VALIGN=TOP>
<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
"Yes" is marked, indicate below the file number assigned to the registrant   in
connection with Rule 12g3-2(b) : 82-_______________  </FONT></TD></TR>
</TABLE>
<BR>

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<TD>
<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>DOCUMENT INDEX </FONT></H1>
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</TD>
</TR>
</TABLE>
<BR>
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<A NAME=A011></A>
<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><I>&nbsp;&nbsp;&nbsp;
  .</I> </FONT></P>

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               <TABLE WIDTH=600 CELLPADDING=0 CELLSPACING=0>
                    <TR VALIGN=TOP>

    <TD ALIGN=RIGHT WIDTH=8%>
      <div align="center">
        <p><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Document</FONT></p>
        <p><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1. </FONT></p><BR><BR>
 <p><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2. </FONT></p><BR><BR>

      </div>
    </TD>

    <TD ALIGN=LEFT WIDTH=81%>
      <p>&nbsp;</p>
      <p><FONT FACE="Times New Roman, Times, Serif" SIZE=2>News Release dated December 21, 2004
 (&#147;T-Mobile Deuschland Expands Its BlackBerry Offering&quot;)</FONT></p>
<p><FONT FACE="Times New Roman, Times, Serif" SIZE=2>News Release dated December 21, 2004
 (&#147;T-Mobile International Extends BlackBerry Range Through Introduction of "BlackBerry Connect" and "BlackBerry Built-In" For Mobile Professionals In Europe&quot;)</FONT></p>


    </TD>

    <TD WIDTH=11%>
      <P ALIGN=center><FONT FACE="Times New Roman, Times, Serif" SIZE=2> Page
        No</FONT></P>
      <P ALIGN=center><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2 </FONT></P><BR>
<P ALIGN=center><FONT FACE="Times New Roman, Times, Serif" SIZE=2>3</FONT></P><BR>

    </TD>
                    </TR>
                    </TABLE>
                    <BR>


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<P ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Document 1 </FONT></P>
<HR SIZE=5 COLOR=GRAY NOSHADE>




<!-- MARKER FORMAT-SHEET="Head Major Center Bold 1" FSL="Default" -->
<A NAME=A001></A>
<H1 ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=3><b>December 21, 2004</b> </FONT></H1>

<!-- MARKER FORMAT-SHEET="Head Major Left Bold" FSL="Default" -->
<A NAME=A002></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=4>FOR IMMEDIATE RELEASE </FONT></H1>

<!-- MARKER FORMAT-SHEET="Head Major Left Bold" FSL="Default" -->
<A NAME=A003></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=4>T-Mobile Deutschland
Expands Its BlackBerry Offering </FONT></H1>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3><B>Waterloo, ON &#150;</B> T-Mobile
Deutschland and Research In Motion (RIM) (Nasdaq: RIMM; TSX: RIM) announced an expanded
offering of BlackBerry&reg; products and services for customers in Germany today with
T-Mobile&#146;s introduction of BlackBerry Connect&#153;, BlackBerry 7100t&#153;,
BlackBerry 7290&#153; and BlackBerry Enterprise Server&#153; v4.0. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>Using RIM&#146;s BlackBerry
Connect&#153; technology, T-Mobile Deutschland will now support push-based BlackBerry
email services on the T-Mobile MDA II in addition to RIM&#146;s BlackBerry devices.
T-Mobile Deutschland is the first mobile operator to commercially launch BlackBerry
Connect&#153; with a Windows Mobile-based device. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>The BlackBerry service allows
business and personal emails to be delivered automatically to the MDA II. Attachments such
as Word files or PowerPoint presentations can also be opened and viewed. Corporate
customers can also integrate the MDA II with BlackBerry Enterprise Server&#153;, making
further features available such as wireless calendar synchronization, wireless access to
the company address book and advanced security with end-to-end encryption. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>MDA II owners wishing to use the
push-based BlackBerry email service can download the necessary software at
www.t-mobile.de/blackberry/software. A CD-ROM is now also included when new devices are
purchased. T-Mobile is currently planning to make the BlackBerry email service available
for additional devices including the MDA III, MDA compact and Sony Ericsson P910 in the
first quarter of 2005. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>In addition to the introduction of
BlackBerry Connect&#153;, T-Mobile Deutschland is adding the BlackBerry 7100t&#153; and
BlackBerry 7290&#153; to its BlackBerry portfolio. Both models have new and enhanced
features including large, bright color screens and Bluetooth&reg; support. The BlackBerry
7100t incorporates RIM&#146;s innovative SureType&#153; keyboard technology and delivers
the power of BlackBerry with the look and feel of a typical cell phone. The BlackBerry
7290 features a compact and ergonomic handheld design ideal for more intensive data use.
Both devices feature all the popular elements of existing BlackBerry devices including
integrated support for push-based email, phone, text messaging, organizer, Internet and
intranet applications. Other new features include more memory (32 MB flash, 4 MB SRAM) and
support for enhanced attachment viewing capabilities. Both devices also feature quad-band
support for international roaming* and Bluetooth support enabling wireless connections
with a car kit or headset. The BlackBerry 7100t and BlackBerry 7290 are available for both
corporate and personal use. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>BlackBerry Enterprise Sever software
v4.0 is expected to be available from T-Mobile Deutschland in Q1 2005. New and enhanced
features include the wireless synchronization of contacts, tasks and notes. Out-of-office,
filter and auto-signature functions can also be modified wirelessly. Advanced Encryption
Standard (AES) support is added and IT administrators will benefit from the option to
centrally load handheld software. Furthermore, it is no longer necessary to install
desktop software. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>*Check with T-Mobile for roaming
services. </FONT></P>


<b>Media Contacts:</b><br>

RIM<br>
Courtney Flaherty<br>
Brodeur Worldwide for RIM<br>
+1 212.771.3637<br>
cflaherty@brodeur.com<br><br>

Hotwire PR for RIM<br>
+44 207 608 2500<br><br>

<b>Investor Contact:</b><br>
RIM Investor Relations<br>
(519) 888-7465<br>
investor_relations@rim.com<br><br>


<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=3>About Research In Motion
(RIM) </FONT></H1>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>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&#146;s portfolio of award-winning products,
services and embedded technologies are used by thousands of organizations around the world
and include the BlackBerry&reg; wireless platform, the RIM Wireless Handheld&#153; 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 <U>www.rim.com </U>or
<U>www.blackberry.com</U>. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>Forward-looking statements in this
news release are made pursuant to the &#147;safe harbor&#148; provisions of the United
States Private Securities Litigation Reform Act of 1995. When used herein, words such as
&#147;intend&#148; 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&#146;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&#146;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. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>The BlackBerry, SureType 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. </FONT></P>






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<P ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Document 2 </FONT></P>
<HR SIZE=5 COLOR=GRAY NOSHADE>




<!-- MARKER FORMAT-SHEET="Head Right" FSL="Default" -->

<P ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=3><b>December 21, 2004 </b></FONT></P>

<!-- MARKER FORMAT-SHEET="Head Major Left Bold" FSL="Default" -->
<A NAME=A002></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=4>FOR IMMEDIATE RELEASE </FONT></H1>

<!-- MARKER FORMAT-SHEET="Head Major Left Bold" FSL="Default" -->
<A NAME=A003></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=4>T-Mobile International
Extends BlackBerry Range Through Introduction of &#147;BlackBerry Connect&#148; and
&#147;BlackBerryBuilt-In&#148; <BR>For Mobile Professionals In Europe </FONT></H1>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3><B>Bonn, Germany and Waterloo,
Ontario</B> &#150; T-Mobile International and Research In Motion (Nasdaq: RIMM; TSX: RIM)
today announced plans to support a wider choice of devices with push-based BlackBerry&reg;
email services. Through the introduction of BlackBerry Connect&#153; and BlackBerry
Built-In&#153;, T-Mobile is extending the range of devices on which BlackBerry services
are supported and available to business professionals in Europe. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>Support for BlackBerry services will
be initially introduced with T-Mobile&#146;s popular organizer, the MDA II; and the
rollout with other devices is expected to continue in early 2005 with T-Mobile&#146;s MDA
III, Sony Ericsson P910i, Siemens SK65 and Nokia 6820. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>RIM&#146;s BlackBerry Connect&#153;
licensing program enables mobile device manufacturers to equip their handsets with the
integrated ability to connect to BlackBerry Enterprise Server&#153; and BlackBerry
Internet Service&#153;. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>With the BlackBerry Built-In&#153;
licensing program, mobile device manufacturers can incorporate various BlackBerry
applications into their own devices including BlackBerry Email&#153;, BlackBerry
Calendar&#153; and BlackBerry Browser&#153; applications. The first device to support
BlackBerry Built-In&#153; is the Siemens SK65. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>T-Mobile International will now be
able to offer a much wider choice of devices to suit the preferences and user needs
of&nbsp;different staff within the enterprise, all&nbsp;managed on the same&nbsp;robust
BlackBerry mobile data infrastructure. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>&#147;A widening range of mobile
professionals are recognizing the productivity benefits of BlackBerry,&#148; said Mark
Guibert, Vice President, Corporate Marketing at RIM. &#147;We are very pleased that
T-Mobile International is broadening its BlackBerry offering with the introduction of
BlackBerry Connect&#153; and BlackBerry Built In&#153;.&#148; </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>Andr&eacute; Stark, Head of Business
Marketing, T-Mobile International comments: &#147;The extension of the BlackBerry service
to a much wider range of new and stylish mobile phone handsets allows T-Mobile to address
the needs of a broader target group of mobile workers which can now have a
much&nbsp;larger variety of handsets to choose from.&#148; </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>Stark continued: &#147;Both user
groups, those with preference for a small and handy voice phone as well as mobile workers
with need for a feature rich wireless device will have the freedom to choose the device of
their preference from a larger choice of BlackBerry enabled handsets from T-Mobile.&#148; </FONT></P>

<!-- MARKER FORMAT-SHEET="Head Major Center Bold 1" FSL="Default" -->
<A NAME=A004></A>
<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=3>&#151; more &#151; </FONT></H1>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>BlackBerry platforms for both
corporate and personal email use are supported. For corporate customers, BlackBerry
Enterprise Server software tightly integrates with Microsoft&reg; Exchange or IBM&reg;
Lotus&reg; Domino&reg; to enable secure, push-based, wireless access to email and
calendar. For individuals and smaller businesses, BlackBerry Internet Service allows users
to access multiple personal and/or corporate email accounts (including many popular ISP
email accounts as well as Microsoft Exchange and IBM Lotus Domino accounts) from a single
device. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>Availability of specific devices may
vary by country. Check with T-Mobile International for more information. </FONT></P>

<!-- MARKER FORMAT-SHEET="Head Major Left Bold" FSL="Default" -->
<A NAME=A005></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=3>About T-Mobile
International </FONT></H1>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>T-Mobile International is one of the
world&#146;s leading companies in mobile communications. By Q3 of 2004, more than 109
million people were using the mobile communications services provided by companies in
which T-Mobile or Deutsche Telekom have a majority or minority stake. And all that over a
common technology platform based on GSM, the world&#146;s most successful digital wireless
standard. This also makes T-Mobile the only mobile communications provider with a seamless
transatlantic service. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>T-Mobile UK, the fastest growing UK
network, currently has 15.2 million customers. Its UK network covers over 99% of the UK
population and currently offers roaming on 370 networks in 163 countries, including the
USA. T-Mobile UK has 1,900 Wi-Fi locations, giving customers the largest UK Wi-Fi network
as well as the largest network in Europe and the USA. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>For more information about T-Mobile
UK, please visit www.t-mobile.co.uk or contact the press office on +44 (0) 70171 50150. </FONT></P>

<!-- MARKER FORMAT-SHEET="Head Major Left Bold" FSL="Default" -->
<A NAME=A006></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=3>About Research In Motion
(RIM) </FONT></H1>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>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&#146;s portfolio of award-winning products,
services and embedded technologies are used by thousands of organizations around the world
and include the BlackBerry&reg; wireless platform, the RIM Wireless Handheld&#153; 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 <U>www.rim.com</U> or
<U>www.blackberry.com</U>. </FONT></P>


<b>Media Contacts:</b><br>
T-Mobile International Press Office<br>
+44 70171 50150<br><br>

Courtney Flaherty<br>
Brodeur Worldwide for RIM<br>
+1 212-771-3637<br>
cflaherty@brodeur.com<br><br>




Tilly Quanjer<br>
Senior Communications Manager, RIM Europe<br>
+44 (0) 1784 223987<br>
tquanjer@rim.com<br><br>

<b>Investor Contact:</b><br>
Research In Motion Investor Relations<br>
(519) 888-7465<br>
investor_relations@rim.com<br><br>


<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>Forward-looking statements in this
news release are made pursuant to the &#147;safe harbor&#148; provisions of the United
States Private Securities Litigation Reform Act of 1995. When used herein, words such as
&#147;intend&#148; 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 Research In
Motion&#146;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 Research In Motion&#146;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. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>The BlackBerry and RIM families of
related marks, images and symbols are the exclusive properties and trademarks of Research
In Motion Limited.&nbsp; 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.&nbsp; All other brands, product names, company names, trademarks and service
marks are the properties of their respective owners. </FONT></P>






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<TD><H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>SIGNATURES
</FONT></H1>
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<TD><P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant
  to the requirements of the Securities Exchange Act of 1934, the registrant has   duly
caused this report to be signed on its behalf by the undersigned, thereunto   duly
authorized. </FONT></P><P>&nbsp;
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<p></P><table width="600" border="0"><tr><td width="33">&nbsp;</td><td width="209">&nbsp;</td><td colspan="2"><div align="center"><b><font face="Times New Roman, Times, Serif" size=3>Research
        In Motion Limited </font></b></div><hr><div align="center">(Registrant) </div></td></tr><tr><td width="33">Date:</td><td width="209"><div align="center"><u>December 21, 2004</u></div></td><td width="59">By:</td><td width="271">/s/ Rob Duncan <hr><div align="center">(Signature)
</div></td></tr><tr><td width="33">&nbsp;</td><td width="209">&nbsp;</td><td width="59">&nbsp;</td><td width="271">Rob Duncan</td></tr><tr><td width="33">&nbsp;</td><td width="209">&nbsp;</td><td width="59">&nbsp;</td><td width="271">Vice President, Corporate Controller</td></tr></table>


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