However, I just tried to register it in my Net10 account. I get a "Failed" message with this explanation:
We are sorry, the Serial Number you entered is associated with another account. Please check the number and try again with a different Serial Number or login into My Account.
I assume the previous owner has it registered to his account. I did send previous owner a message asking him to delete the phone from his account. However, I do not know if that will be successful. Thanks.