11-01-2012 08:59 AM
Do you have a BlackBerry Data Plan enabled on your account with your carrier or mobile provider? You must, in order to get use of Yahoo Messenger.
On your Manage Connections screen, click on the Services Status.
What is the status of the BlackBerry Internet Service?
PIN: C0001B7B4 Display/Scan Bar Code
PIN: C0005A9AA Display/Scan Bar Code