Well for starters, it depends on who you are, and what your lifestyle and preference are. Let's start from the outside in. The first thing you'll notice is size. In thinness they are about the same, in just under 8mm. But the iPhone screen is 4 inches while Samsung's is 5. Because of it's size the S4 may be harder to get a handle on than the iPhone 5, which is designed to fit in the hand of anyone. The S4 is backed with plastic while the iPhone 5 is backed with aluminum. Picture quality is something that is very noticeable as well. The iPhone boasts a clearer picture with IPS, which brings slighly more natural looking colors, while the Galaxy S4 uses AMOLED which has better contrast and black level. Both are pin sharp, though to me AMOLED looks a bit saturated and grainy to me. The camera of the S4 is 1080p whereas the iPhone 5 camera is 720p. In well lit and low light areas the S4 has less clarity but, in darker areas with the flash, it excelled. The touch to focus features on the on the iPhone are a bit shaky. Each time you select a focus point it has to readjust giving a temporary blurry appearance on the screen. Next are the touch screens. The iPhone uses IOS which is standard tap or slide your finger across the screen. The S4, however demolishes IOS with Touchwiz, which allows you to simply wave your finger or hand over the screen or tilt the phone to interact with it. This feature is called Air Gesture. There is also another cool feature that will pause a video if you look away from the phone, called Smart Pause. With Touchwiz you may never have to wipe your screen of fingerprints again. In short, Touchwiz demolishes IOS. As far as sound quality, the iPhone 5 strains when reaching top volumes, whereas the S4 copes much better at top volumes. Lastly the browser. The browser on the iPhone wins by a second or two except when it comes to Wi-Fi. Then it is painfully slow. At least from what I saw...Who wins? Well you be the judge. Of course I must leave you with this. My opinion. From looking at the history of the iPhone there be another one out shortly to "top" the previous one. Also the iPhone seems to be more "business" oriented like the Blackberry for example. Whereas the S4 is more media based. So if you're looking to send lots of emails and things of that nature, an iPhone would be the recommendation. If you do a lot of downloading, streaming, and movie watching, though the iPhone boast of a slightly faster browser the S4 is more geared towards things of that nature. Plus the screen size for the video is a plus. The S4 can be great for business as well. It can be used as a power point, especially with the Touchwiz, no touch feature. In my opinion, the S4 won with the Touchwiz and the iPhone 5 won with the Video and browser.
