Samsung launched the GS4 towards the end of May. They sold 10 million units in less than a month, and now Korean media report that sales reached the 20 million mark - in just over two months. Even though sales have reportedly slowed down, the GS4 is still selling about 70% faster than the GS3.
Samsung still plans to sell 100 million units of the GS4. Samsung's flagship phone features a 4.99" Full-HD (1920x1280, 441 PPI) Super AMOLED display, an Octa-core (Quadcore in some models) 1.6Ghz CPU, 2GB of memory, 13 mp camera and a 2,600 mAh battery. The GS4 includes a lot of new software features and special UI controls, include the Adapt Display which allows extensive display calibration adjustments.