DOES MY IPHONE 4 HAVE A SIM CARD?

I have an iphone 4 (32GB - Black - Verizon servicer) and i want to sell it. I was asked if my phone had a sim card in it. I don't know the answer to this question. Does my iphone have a sim card? Also, if i want to sell it to a person who does not use verizon, what will i have to do to the phone?

No, it doesn't. As for what you have to do, go to a Verizon store near you, and find out your options. Do NOT go to the Apple store.

From what I've heard, Verizon doesn't use SIM cards, I think they use CMDA.

And as far as I know, the phone won't work on another network, I think Verizon phones HAVE to stay with the Verizon network. I've never heard of an AT&T user having a phone from Verizon, or a Sprint user having a phone from T-Mobile.