The Galaxy S4 is Samsung's 2013 flagship phone. It sports a 4.99" Full-HD (1920x1080, 441 PPI) Super AMOLED display behind a Corning Gorilla Glass 3, an Octa-Core 1.6Ghz Exynos CPU (some models use a QuadCore 1.9Ghz QUalcomm CPU), 2GB of memory, 13 mp camera and a 2,600mAh battery. The S4 is actually a bit smaller and lighter than the S3, despite having a larger display and a larger battery.
The S4 will launch towards the end of April worldwide.
5" FHD (1920x1080) Super AMOLED