A video from GuruAidTechSupport shows off the Gamecube emulator Dolphin running at an incredibly smooth framerate on a display model of the Samsung Galaxy S8. While the emulator has been around for a while, this is one of the first times we've seen gameplay this smooth.
http://www.notebookcheck.net/Gamecube-on-the-go-Dolphin-emulator-runs-smoothly-on-the-Galaxy-S8.213038.0.html