What i want to say is other than checking the model number, is there any distinct differences on refurbished phones that doesn’t exist on new phones? How are you going to immediately tell the refurb one is used before without looking at model numbers? At least for apple refurb ones, whereas third party ones can be sketchy.No, refurbished devices have a specific number because they have been used before. What you’re talking about are replacement devices, which are often factory new but not designated for retail sale. If Apple sees a need to differentiate, I’m not quite sure why that isn’t good enough for you.
As for replacement portion, i do apologise for not making it clearer.