0 LG Optimus 4X HD

LG Optimus 4X HD. The new quad-core LG Optimus 4X HD looks to be the best of LG's batch of upcoming smartphones. It will likely be the first Nvidia Tegra 3 phone to hit the U.S. market. It's packing a quad-core processor running at 1.5GHz, along with Android 4.0 (Ice Cream Sandwich) and a large 2150mAh battery. There's an 8-megapixel camera on the back and a 1.3-megapixel camera on the front. NFC is on board as well.

The 4X HD has a 4.7-inch, 1280-by-720 IPS screen that looks super sharp. Its 313 pixels per inch is slightly less than the iPhone 4S's 326, but you still can't see the individual pixels. It's narrow for a huge phone, so it may be more usable one-handed than other extra-large devices.

We saw a demo unit of the 4X at MWC that was loaded with all of the Tegra 3 sample games on it, including the puzzle game Sprinkle and the racing game Riptide GP. They were both as smooth and gorgeous, with as beautiful atmospheric effects, as we've seen on the Tegra 3-powered Asus Transformer Prime tablet.

LG hasn't announced a release date or carriers for the Optimus 4X HD, although the company didn't headline it as an LTE device. Considering that LG's Optimus 2X came to T-Mobile as the G2X, this phone may be destined for T-Mobile's HSPA+ 42 network.