One of the best things about the Galaxy S8+ is how comfortable is holding the phone in your hands. This beat comes with a giant 6.2-inch display, however, the screen-to-body ratio is very high, 83%. In other words, the bezels on the sides are almost non-existent and the top and bottom bezels are also very small. This means that almost the entire front of the phone is dedicated for the screen itself. This also means that Samsung was able to maintain a relatively small size compared to other phones that uses an even smaller display.
Here is an image taken from mobiledevicesize.com which shows how the scree-to-body ratio of the Samsung Galaxy S8+ compares to the iPhone 7 Plus. You can see the huge different in screen size, but as you can see, those two phones has almost the same size, amazing! By the way, the iPhone 7 Plus has a 5.5-inch display, the Galaxy S8+ has a 6.2-inch display.
The Samsung Galaxy S8 Plus is only 1.3mm taller than the iPhone 7 Plus, yet it comes with a 6.2" display, whether the Apple iPhone 7 Plus comes with a 5.5-inch display. It's also 4.5mm narrower than the iPhone 7 Plus. This is an amazing and optimized use of the phone's space. It makes me wonder why it has taken such a long time for mobile phones to look like that. I know it's not the first phone that comes with a such design, but it just seems that it took forever to get to this point. The good news is that we are in that time and place where we expect to see more flagship phones coming with such an edge-to-edge design. In the future, these top and bottom bezels will also be removed as well, but it will take some time until those type of phones will be available. The next step for screen is a folding display, which we might get to see in 2017.
The Samsung Galaxy S8+ compete against the iPhone 7 Plus and will compete against the upcoming iPhone 8 and iPhone 8 Plus. No doubt that when it comes to screen size and phone size, the S8+ wins. It will be interesting to see how it compared against the iPhone 8 and 8+ to see if it can maintain its appeal when those two new Apple phones are released, I doubt it, but let's wait and see.