Hi, recently chose to upgrade my iPhone 15 pro max to the new iPhone duo. Which is obviously not ready yet, so I will continue to use my 15 until it arrives I guess.. no. My iPhone 15 pro max has now disappeared from my my sky account and is only showing my iPhone duo.. which I do not have. My iPhone 15 now is not working without using my WiFi and I cannot make any calls to try and resolve this. It is saying 'no sim' in the top left corner. I'm really angry as I need to make phone calls for work etc
