This is one of the best phone I have seen in the Galaxy S series. Samsung has brought a world class design, big without being bulky, with some good specs and usability you'd expect at this price. Its a lot more comfortable to hold on than S6 and feels a lot less plasticky because of having more metals.
It is having a 5.1-inch AMOLED display with quad-HD resolution, 2560x1440 and gives about 577 pixels per inch, which is still ridiculously dense!. And the panel is so excellent, with crisp colors and deep blacks. It's about as good as you can get — and visible excellent outdoors and full sunlight as well. And it's still impressive to see a screen that's as much as bigger with as much as resolution. Kudos to Samsung.
The speakers are front-face and much improved, less noisy compared to S6.
The camera is excellent, Combine with that an outstanding camera and you've got a phone that will serve just about anyone. The act of taking a picture remains as great as ever. Samsung's camera app is excellent, and feature-rich without being overwhelming with tons of options.
Its having waterproof. Not quite like having it in the pocket while swim, but it's good for a half-hour in about five feet of water. A quick dip in the shallow end shouldn't kill it.
An another more useful is, Samsung's fingerprint sensor which is tucked inside the home button. And its so good as ever and doing cool and quick.
All in all, it's a really good feeling in the hand. Premium!