If you like tinkering with things and don't particularly care for the Galaxy S8(+)'s new Samsung Experience on-screen keys, you're in luck. Senior member Tigerhoods over at XDA-developers has come up with a mod in the form of a small APK that replaces the Samsung nav keys with an overlay to look like those nav buttons found on the Google Pixel. All without needing root! The best news of all is that you can still change the color of the nav bar as you normally would in the Samsung settings, and you can also still change the order of your nav buttons. Before we tell you how to get...
Source: http://www.gsmarena.com/mod_get_pixel_nav_keys_on_the_galaxy_s8_with_this_noroot_mod-news-25219.php