The build quality and materials are amazing. As soon as you pick it up you know you're holding something that is built with more love and thought than a Galaxy Nexus or GSIII.
The front and back are Gorilla Glass 2 and the sides are made from a rubberized plastic that actually feels great. The whole phone is really solid, and it's the first Android phone that seems like it's had real passion put into the design.
The front is still a beautiful, minimalist black slab, devoid of any logos or carrier branding. I love it. The back features a giant Nexus logo at the top and a smaller manufacturer logo at the bottom. This is, easily, the most beautiful Android phone ever made.
Initial Impressions Of The Nexus 4 - Raising The Bar For Design, Materials, And Build Quality