Starting with the Galaxy S8 and S8+, Samsung ditched physical buttons in favor of on-screen navigation, as there was simply no room for them on the phones’ almost non-existent bottom bezel, and the brand new Galaxy Note 8 continues this trend.
Thankfully, Samsung has added a healthy dose of navbar customization options in the latest iteration of its proprietary Android skin, which grants users the ability to rearrange the on-screen buttons’ order, to change the navigation bar’s color, and even make it disappear! Previously something reserved … – Source