How do I get voice mail from a non active Blackberry Curves?

I have 15 message on a non activated Blackberry Curves

I believe voice mails are kept somewhere on your service providers servers an not on the phone itself.

^^ pretty sure that would be correct as well. You can probably access them from any phone actually

Not sure what you mean by having them on a non-activated device. Does the Curve show that you have the voicemails and thwre is no SIM card in it? Did you put your SIM in a Curve that was sitting around?

Voicemails are indeed on the carrier's server. They are not kept pn the defice itself.