3D-Like Screen. The Fire phone's Dynamic Perspective display catches your eye. Literally. Four cameras on each corner track your head movements and adjust the image on-screen accordingly.
More from NBC News:
Phony Obamacare Applications Soar Through System
Schizophrenia Study, Cash Jump-Start Psych Research
Red Greenhouse Grows Veggies for Mars
The effect — enabled in a handful of apps — lets you see 3D-like images. You can also get additional information, such as restaurant listings, merely by tilting the phone to the side.
There are also a handful of games that react to head tilts, but I found it disorienting at times.
Firefly: A Shazam for Everything. The Fire's other marquee feature is called Firefly. It rhymes with "buy." And here's why: Hold the camera button for two seconds, and Firefly will not only identify what you're looking at, but also let you purchase it on Amazon. It even works for videos.
Read MoreAmazon doesn't always offer the best deals: Study
When Firefly works, it works well, but I'm not sure how useful this feature is for everyday consumers. How often are you out and about, see a can of Coke, and think, "I need to order a case of that?"