Wouldn't it be nice if your iPhone could easily slug off a splash by the pool or even survive a dunk? The Galaxy S5 can. It's rated to withstand 3 feet of water for 30 minutes. During our review, we placed the phone in a shallow vase for a few minutes, and it worked perfectly once we dried it off. With the iPhone 5s, you need a case to get this sort of protection.
To be clear, the S5 requires an annoying trade-off for its submersibility. There's a cover for the microUSB port, which must be removed every time you charge the device. Perhaps Apple can figure out a way to make the iPhone 6 water-resistant while still keeping the Lightning port exposed.
More: Top 15 iPhone 5s Cases