Getting a new iPhone 15 pro and Apple Watch 8 (Cellular) delivered next week. Upgrading from an iPhone 12 and Apple Watch 4 (GPS).
Is there a certain order of operations I should go to make the process as smooth as possible? Activate and transfer everything from 12 to 15 and then set up new watch? Pair the new watch with the old 12 and then transfer and activate the 15? Something else?