If I buy the unlocked Nexus 6 from the Play Store and use it on T mobile (which I have now) could I switch to Verizon in a few months when I go to college?
I think it should work. However you might have to get the VZW nano SIM card activated in a different phone before it would recognize the Nexus 6. Although if Verizon Wireless finally releases the Nexus 6 on their network, you won't need the extra step.