RayFung

Hi there, I recently got a celly a few days ago from Rogers. This is a pretty general question for all cell phones, but I'm posting this in the Rogers section since I got it from that provider. Anyway, my prob is that everytime someone calls me the screen says "No Number," and no I do not have call display. However, a lot of my friends told me that you dun need call display and that you can still see the number along with the name if the number is already in your contact list. I called rogers tech support and the guy was talking a bit fast so I understood only like 50% of what he said, and he was talking only bout promoting call display and name display. So can anyone clarify this for me? Do I actually need call display to see the numbers of incoming calls or do I actually have to get call display for that to happen? Thanks for the assistance guys.
P.S. The model I'm using is the Samsung D807x right now if that has anything to do with it.