So regarding the Nexus 5 (LG-D820)
Earlier I wrote in this thread that the Nexus 5 won't support Verizon Wireless, but I think I might be wrong about that.
Verizon is starting to roll out AWS (which is on LTE band 4), and the LG-D820 just so happens to support that band.
Based on this
FCC communique (i felt like saying communique), the LG-D820 will support CDMA voice calls. Additionally, documents from the FCC show tests done on CDMA2000, which is what is used for Verizon as well as Sprint.
In essence, the Nexus 5 is fully capable of being on Verizon Wireless, as long as your neighborhood has the new AWS spectrum (1700Mhz) that Verizon has been rolling out since the summer. Verizon also recently purchased AWS spectrum from AT&T which included western cities (Los Angeles, Fresno, Calif., Phoenix, and Portland).
Link for thoughts from
Droid-Life