The Federal Communications Commission recently published documents that reveal information about an unannounced Windows Phone device from LG. According to the documents, the LG LS831 supports CDMA in the 800 MHz and 1900 MHz bands, indicating that the handset will land on Sprint’s 3G network. Images reveal that the smartphone features a 5-megapixel rear camera, a front-facing camera, a headphone jack and a microUSB port. Sprint hasn’t launched a Windows Phone device since the HTC Arrive was released in early 2011, however the carrier is rumored to be prepping an LTE-equipped Windows Phone for a fall launch.

[Via Phonescoop]