- Carry on a real-time conversation with friends and colleagues in several different locations — or carry on several conversations simultaneously.
- You’ll be able to keep up with your BlackBerry buddies.
- BBM upgrade notifications – BBM will notify you when there are updates to download straight from within the app
- Manage log-in and contacts as you would if you were using an IM program from your PC.
- Be notified by a specific ringtone or vibration setting each time a message arrives from a particular person.
- I think if your cellphone providers service is down, BBM still works,It uses BBM data plans.
One disadvantage of BlackBerry Messenger is that you can’t send an instant message to someone unless you know his or her PIN code.