Do all cdma iphones from sprint have sim card slots/trays too? ?

I'm referring to iPhone 5 locked with sprint. I know the iPhone 5 they offer is CDMA and not using any sim. But I'm wondering if it also has sim card slots/trays possible for unlocking and for use abroad? Thanks in advance!

No, the device is CDMA only. There's no GSM (sim) portion to the Sprint iPhone.

If you want to use an iPhone abroad, go with one from AT&T and unlock it. You can do so here: http://gsmunlocklabs.com/unlock-iphone/

Yes. How you'd go about getting that unlock is anyone's guess