I have a new prepaid phone and I'd like to transfer my prepaid credit and plan from my old phone. I can't just move the SIM card because I'm going from a normal SIM to a nano SIM. How do I go about that?
In self serve you 'change your phone' by updating the SIM card number from the old to the new. This will carry all your account info from you old phone to the new one. You then use the new SIM in the new phone. This assumes you have not already activated the new SIM.