03-20-2013 07:50 AM
Welcome to BlackBerry Support Forums
Where you getting this error message , On your device ?
If you're sure aboy the username and password then try this Knowledge Base to confirm your BlackBerry ID Username:
KB28684 : How to confirm a BlackBerry ID username.
03-20-2013 03:46 PM
03-20-2013 03:54 PM
So you recently Changed your SIM Card ! If it happened after changing the SIM card and the error is appearing in your Device , then please follow this Knowledge Base :
KB28212 : "Unable to login to your BlackBerry ID account" or "Unable to update your BlackBerry ID account information" error occurs on a BlackBerry smartphone running BlackBerry 7
But before trying any suggestion do your device backup , because as a last resort you may have to follow Resolution 2 to resolve your issue if other suggestion fails.