LG may announce a quad-core NVIDIA Tegra 3 Android 4.0 (Ice Cream Sandwich) phone during Mobile World Congress next month. Pocketnow recently leaked an image and details on the X3, which also reportedly offers a large 4.7-inch 1280 x 720-pixel resolution display, an 8-megapixel camera, a 1.3-megapixel front-facing camera for video chat, NFC, a huge 2,000 mAh battery and possible support for HSPA 21Mbps or 4G LTE networks. The X3 will no doubt have stiff competition at the show; Samsung is also expected to announce its quad-core powered Galaxy S III smartphone. BGR will be reporting live from Mobile World Congress, so we’ll be sure to bring you all the details if and when the X3 makes an appearance.