Samsung has unveiled its latest large-screen device, the Galaxy Note 4. It features a sharp 5.7-inch quad HD AMOLED display with 2,560 x 1,440 resolution, along with an upgraded 16-megapixel main camera with optical image stabilization and 8x digital zoom, as well as a front-facing shooter with a higher-resolution 3.7-megapixel sensor and an F1.9 aperture for low-light shots. Inside, the Note 4 runs Android 4.4.4 with an interface familiar to Samsung users, with a quad-core or octa-core processor (depending on market) paired with 3GB of RAM and 32GB of storage. There's the requisite microSD slot for expansion, and the 3,220mAh battery has a rapid charge feature that goes from zero to 50 percent capacity in just 30 minutes. Finally, the phablet is housed in a sturdy metal frame and features the same faux-leather backing of its predecessor. The Samsung Galaxy Note 4 launches next month across all four major U.S. carriers.