The US Federal Communications Commission official website revealed many details accompaying photos of the unannounced LG Windows Phone labelled as "LS831." The phone which has passed the FCC certification, the site indicates is a CDMA device that runs on both the 800 MHz and 1900 MHz bands, and at least one of which the 800 MHz is used by US carrer Sprint.
The photos reveals a 5 megapixels camera, a front-facing camera, as well as sporting a 4" display, a 1,540 mAh user-removable battery but no microSD card slot.
The photos of the mainboard reveals a Hynix H26M42001FMR chip, which is an 8 GB NAND chip, and another large Samsung DDR chip with an obscured part number. Either one of these sits atop the Qualcomm processor that powers the device.
After the release of LG Jil Sander Windows Phone back in October last year, which is said to be just a remake of the first-generation LG Optimus 7. Another LG device, named the "LG Miracle," was revealed back in February this year, which was said to come with NFC support. And, a rumored LG Fantasy, appeared in a leaked roadmap for LG in 2011.
Here are some more photos of the LG LS831 Windows Phone:
There are also documents relating to Sprint Nextel in the device filing, along with a photos that were kept confidential for 180 days starting on October 4, 2011 -- unfortunately for LG the 180 days ran out on April 1 and now the photos are publicly available.