Samsung and Apple are the two most profitable smartphone companies in the world. Together, they make practically 100% of all profits in mobile computing.
Right now the two giants each have a flagship device: The iPhone 5S and Samsung Galaxy S4. The Galaxy S4 is due for an update pretty soon, but it can still hold its own in many respects. In fact, there are a ton of things it can do that the iPhone 5S, the darling of the high-end smartphone industry, can't do.