At 5.6 inches long by 2.9 inches wide, the S5 is Samsung's biggest smartphone yet. Longer still is the One, which measures 5.8 inches long, thanks to its zaftig speakers. But it's a bit narrower than the S5 at 2.8 inches wide; weight and thickness are roughly even. The HTC One measures 0.37 inch thick and tips the scales at 5.6 ounces. The S5 spreads the pocket by 0.32 inch and weighs 5.11 ounces.