[Q] Unlocked N6 from Amazon on Sprint, a no go?

I am trying to activate an N6 from Amazon on Sprint, and they are saying only Sprint devices can be activated. Maybe I didn't do enough homework before buying this, but is that correct? I was under the impression that unlocked phones could go anywhere*. Can someone confirm before I send my phone back to Amazon?


Thanks!

*any major US carrier, btw mine is the XT1103 variant