Based on the leaked document (FCC) as reported by Phonescoop, the new Smartphone made by LG with Windows Phone Operating System, mentioned to have the CDMA-based frequencies support at dual-band CDMA 800MHz (Sprint) and 1900MHz. According to the same source, the LG LS831 has a 5MP camera, front camera, audio jack and a microUSB slot that also called as the "Sprint Nextel Waiver" on one of the documents.
While there is no official news about LG LS831, we find in the record there is LG-LS670 (LG Optimus S Sprint - Optimus V Virgin) with Android 2.2, 3.2-inch display and features Mobile Hotspot that already available with Sprint. Meanwhile, a model with Windows Phone Operating System that available with Sprint is the HTC Arrive (also known as the HTC 7 Pro). Meanwhile, the other LG product with Windows Phone registered launched by AT&T with model number LGc900 which is also known as LG Quantum.
Via: Phonescoop