Is US Cellular GSM and CDMA?

I have a CDMA phone with US Cellular and have a chance to get a good deal on a GSM(Edge Wireless), and I need a new phone anyway but I've noticed US Cellular has GSM and CDMA phones....is that a mistake, or is that true can I get the GSM phone and unlock it for US Cellular?

If US Cellular does have GSM then you will need a sim card to use it with. I'm not real familiar with US Cellular but you need to talk to Customer Service in order to switch from CDMA to GSM.

i just went to the site of u.s. celullar, www.uscc.com and they base in chicago. according to the site the network they have is cdma and they don't have a gsm network.
why don't you buy that 5140 and check ebay for sim card. hold on to your cdma phone till your plan is over.

USC is a CDMA.