Another year, another Galaxy S flagship smartphone from Samsung. 2013's version of the crown jewel, the Galaxy S 4, has just been officially announced at its Unpacked event. Since we know you're dying to find out what's new, let's dive straight into the details. The GS 4 features a 5-inch 1080p (1,920 x 1,080) Super AMOLED panel which offers a pixel density of 441 ppi. It's also a powerful beast: it packs 2GB RAM and will come with either a 1.6GHz Exynos Octa-core