Update: Further investigation of the FCC documents by the folks over at Engadget and Anandtech have revealed even more information on the device. Multiple references have been found to "MSM8974", which is the Snapdragon 800 processor. The firmware build indicates that the device is named "aosp_hammerhead" (keeping with the fish codename Nexus history) and is running Android 4.4.
Other new information includes a screen size of 126mm or 4.96-inches diagonal, and a full case size of 131.9mm high and 68.2mm wide (for reference, the Nexus 4 is 133.9mm x 68.7mm). We also see reference to a 2300mAh non-removable battery in the device.
Original story: Right on the heels of the announcement that Android 4.4 will officially be called "KitKat", we saw a very interesting "leak" from a Google promotional video that showed off what seemed to be an unreleased Nexus phone with a very similar design to the New Nexus 7. A new LG device, model number LG-D820, has just passed through the FCC bearing a striking resemblance to the device shown off in that video.
Unlike most FCC filings we actually have pictures of the back plate of the phone, showing off the NFC antenna and Qi wireless charging contacts underneath the shell. The outline and materials certainly look very similar to what we saw in the video, and the one tell-tale sign is a distinctly large camera lens hole in the back plate.
This LG-D820 device, whatever it may be, supports a serious number of radio bands as well. We're looking at pentaband HSPA+ 42mbps on 850, 900, 1700, 1900 and 2100MHz, 7-band LTE on Band 2, 4, 5, 17, 25, 26 and 41 and most interestingly EVDO revA (CDMA) on 800 and 1900MHz.
Those HSPA+ bands fit in line with the ones found on the Nexus 4 and will support basically any GSM network around the world. The LTE bands fall in line with those used by AT&T, T-Mobile and Sprint here in the US as well as a few others globally. The EVDO revA frequencies also hit what's in use by Sprint today. Notably missing from these supported frequencies is Verizon here in the states.
The rest of the FCC documentation shows us other radios available, such as Bluetooth 4.0 and dual-band 802.11b/g/n/ac Wifi. The evidence is surely mounting that we're looking at a Nexus phone here, made by LG, which has at least the possibility of being used on AT&T, T-Mobile and Sprint in the US and countless carriers around the world. Let's hope that we hear something closer to official confirmation of the device soon.