The BlackBerry Internet Service did not prompt me to log in with my user name and password

If you have a user name and password for your BlackBerry Internet Service account and you access your BlackBerry Internet Service account using the email setup application or the browser on your device, the BlackBerry Internet Service automatically logs you in to your account. You only need to type your user name and password when you log in to your BlackBerry Internet Service account using a browser on a computer.