If You’re new to owning an iPhone do you have to make a new Apple ID or can just use the same one that you already have on another apple device?

An Apple ID is associated with a person, not a device. In fact, it’s the way you can share your personal information between your various Apple devices - the information associated with your Apple ID.

Of course, only you should ever use this ID.

It is recommended to use the same Apple ID on each device that you personally use.