I have just received my new SIM card. I have inserted it into my iPhone and the mobile data is working but I have no phone service to make calls and texts. I haven’t yet had the chance to transfer my old number so I thought I’d have a random number at this time. But it doesn’t seem so. I can’t log in to the app as I have no ID phone number. My phone is only showing my old number in settings. I don’t know what to do as ideally I would be able to use my PAC code and start the mobile number transfer once I can log in to the app….But I can’t.