Best answer by Chad Burr
You'd need a postpaid plan but you don't have to have a tab. You'll even get a 10% discount for bringing your own phone From:nitty gritty http://koodomobile.com/en/on/plansandboosters.shtml#nitty
(2) Availability of service will vary by country and is subject to change without notice. Excludes premium messages and subscription-based messages. Picture messaging includes international picture messages sent and received within Canada. Picture messaging is not supported by a BlackBerry Curve or Bold smartphone.