Your Email address is your BBN Id and cannot be changed for any account once registered.
Your phone number should be modifiable but on the 8th of August, 2008 We at BBN concluded on a unique phone number policy to check the activities of exploitative users who singly registered tens to hundreds of accounts on BBN SMS in order to continuously accumulate the 2 free sms we offer during sign up.
Posted in: Account Access, Messaging, Prepaid SMS Messenger, Sending Text Message