After waiting in several days Black Berry Messenger had officially announced the availability for iOS for iPhone and Android for Smartphones.
Screenshot credits to: iTunes.Apple.com
You can download BBM here: BBM Official Site
BlackBerry's Andrew Bocking said users who download BBM will have to open the app and enter their email addresses to hold their spots in the line. BlackBerry will email the users once they reach the front of the line, and can start using BBM. He also said users may not be able to immediately start sending and receiving messages, as a line-up system is in place to cope with demand.He added to help manage this unprecedented pent-up demand for BBM, we are implementing a simple line-up system to ensure a smooth roll out. [source: BlackBerryBlog ]