How to add new phone number
i transferred all my old stuff from my old phone to new phone but I have a new number and I don’t know how to add it
iPhone 6, iOS 11
Your service provider should have given you a sim card or eSim. You can install the sim card directly in the new iPhone's sim tray if its a model that supports physical sim cards, or add the eSim in Settings ➜ Cellular ➜ Add Esim.
click here ➜ Set up cellular service on iPhone - Apple Support