There has been much speculation about the Nexus 6P's big black glass bar. What does it do? Why is it so big? Why does it kind of look like a Cylon head? Well, the answer is that, unsurprisingly, it's just form following function. You see, because the 6P is predominantly made of aluminum, which acts as a reflector to various radio and other wireless signals in the device, there needs to be a place for antennas to send out their various signals. You can accomplish this with ceramic or plastic inserts like HTC or Apple, or you can construct portions of the phone from different materials (like glass) to help those precious wireless communiques get out.

The Nexus 6P's big glass window serves as a home for the rear camera, dual LED flash, laser autofocus module, NFC coil (yes, really), as well as an outlet for Wi-Fi, Bluetooth, GPS, and some mobile data connectivity. There is an additional plastic window along the bottom of the phone for the main cellular antenna, as well.

We got this information directly from Google, from a person working on the design of both Nexus devices, so it's legit. And that, ladies and gentlemen, is the story of the Nexus 6P's big, black bar (which is made of Gorilla Glass 4, by the way).