Can a brand new unopened iPhone be tracked?

I purchased a package(iPhone 5) from Amazon.com that UPS said they delivered, but it never arrived at my home. I wasn't home all day the day of the suppose delivery so I'm afraid it was stolen. The status CLEARLY says it was delivered at my address, but the package is nowhere to be found and to be honest. I don't think Amazon made a mistake. I have a feeling somebody took it upon himself to steal it. I was really depressed for a second, until realizing… Aren't they suppose to leave a notice anyways? No notice was left which brings me to the conclusion that it is NOT my fault and they should refund me. Now, I have TWO questions. Who do I call about this? UPS, Amazon or Apple? Also, can the iPhone just be tracked down to see where its located, maybe that way they can see who the thief is?

Did you check you local post office?

I would call UPS. They will initiate a search. It is possible that UPS delivered it to the wrong house, like a neighbor. After talking to UPS call Amazon and let them know so they can start a claim.