Switching from go phone to postpaid
Hello. I am trying to see if I can switch my prepaid gophone phone number and balance to a postpaid account. My brother in law said that I can add a line to his account. So if I purchase a new iphone and open a new line on someone else's account, can the balance that I have accumulated on my prepaid account, be transferred into his postpaid account? Or would I lose that balance. I have $400 accumulated on that prepaid account and I would hate to lose it all. Thank you.