Originally Posted by whsbuss
Have you tried sending a PIN message to yourself? If that doesn't work, contact your carrier.
Agreed on sending a message to yourself. I have a feeling that you are doing something incorrectly, because it is odd that 2 BB's with 2 different providers is doing the same thing. I would make sure that you are actually composing a PIN message, and not an e-mail message. Also, when the red X comes up, if you go into the message, I think it will tell you why it failed. See what the reason is, and post here.
Also, what model phone are you using?