If you live in cold winter climes, you likely become very annoyed every time you need to take off your gloves in the cold weather in order to use your S5. Yes, you can buy expensive gloves made just for that, but why spend the money when you don't have to? Tap Settings from the Apps screen, scroll down to the Sound and Display area, then tap Display and check the box at the bottom of the screen next to "Increase touch sensitivity."
Turn on spectacular music special effects
The S5 has many ways you can add special effects to its speakers, everything from optimizing them for small rooms, to optimizing them for large rooms, simulating the reverb in a concert hall, simulating a 7.1 surround sound system, and more. To do it, launch the Music app, then tap the settings button at the top right of the screen, and tap SoundAlive. From there, you can make the S5 do remarkable music things.