BT747 should work on Mobile Phones that supports CLDC 1.1 / MIDP 2.0 and JSR-82 (bluetooth library). Take a look into the list of working reported phones. Please report if you have run it on a unlisted device, so we can add this to the list. Thanks. Download the current stable version from BT747-Sourceforge-page (select the file Unzip the content and change to "dist". There you found the needed "BT_J2ME.cod". Install that file in the usual way on your Blackberry. Development versions have more functionality but are not considered stable enough to share with the larger public.