mobile

Needing some help. Purchased an "unlocked" Nexus 6 from eBay. I had an error that said phone iccid compare with sim iccid error. I setup the correct APN and still got no service. I restarted the phone and that little Android notification is now gone but I still have no service.

When I go to Cellular Networks I can no longer have an option to search for cellular providers nor input an APN just Preferred Network Type and System Select.

Can anyone help!?