Ports on the bottom include a headphone jack, USB-C connector, microphone port, and speaker grille.
The front face is smooth and very nearly featureless—the physical home button has been replaced by a pressure sensor that lives under the display, making this a truly monolithic device.
Lastly, frequent SIM-swappers take note: there are two nigh-identical openings in the top of the S8+. One is for your SIM eject tool, and the other houses a microphone. Don't mix those up.