Originally Posted by torrestoy
go to email set up icon on the screen you will see email accounts click on that it will pull up all the accounts set up for that phone just select delete.
That won't help. You need to know the BIS credentials. Not an option if someone else set it up.
OP is stuck as the carrier will need to delete the BIS account.
Unless the OP's friend can contact the original owner and obtain the BIS credentials.