We definitely want to get this figured out for you ASAP. Please, send us a private message with your phone number, PIN code, MEID/IMEI number of the phone, and the ICCID/SIM card number to further assist you.
Hey there, @patfam! Thanks for contacting us. If you are trying you old SIM Card, it won't work. You'll need to visit this link: https://www.virginmobileusa.com/plans/bring-your-device.html and if compatible, the system will guide through the process of purchasing a compatible SIM Card for your new Apple device.