Caller id for address book contacts?

I have a KRZR. Does this phone have caller id for contacts in the address book?
Thanks!!

Specify what you mean...

Yes, it does have the caller ID ability...so when someone calls you it will display their name if they're in your address book or just their phone number if they're not in your address book.

I hope this helped!

Right now it's just showing unknown for everything, even names that are in the address book. Do they need to be saved to the phone or sim card?
Thanks,

What wireless provider do you have.

It should not need to be stored in your phone to display a caller ID.

This feature is carrier dependent. If your wireless carrier doesn't offer this feature, or it was disabled, it will not work either.

OK, that's what I was wondering, because my old motorola phone (can't remember the model) has caller id for those contacts in my address book, even though I don't subscribe or pay for caller id through my provider.