I recently got a cell phone added to an account owned by my wife. After creating a sync to the AT&T AddressBook I was not able to access it online, even after registering as a new AddressBook user. I am confused over what features are available to me versus what features 'belong' to the account owner.
Related questons:
Can a cell phone user who is not the account owner have an AT&T access ID?
Does it make any sense for a cell phone user who is not the account owner to have an AT&T access ID?