The S5 is Samsung's biggest smartphone yet, rivaling the company's Galaxy Note 3. At 5.6 inches long by 2.9 inches wide, it's just one-third of an inch shorter and one-quarter-inch narrower. But next to the diminutive iPhone 5s, Galaxy looks like a surfboard. Apple's device is just 4.9 inches long and 2.3 inches wide and fits and is operated comfortably in one hand. Thickness is a wash; Samsung’s S5 spreads the pocket by 0.32 inches and the iPhone 5s by 0.30. Galaxy weighs roughly 25 percent more than iPhone: 5.11 ounces vs. 3.95.