The Samsung Galaxy S9 is identified by its model number: SM-G960XU. It is the ninth generation of Samsung's Galaxy Series that was released in March 2018. Available in Lilac Purple, Midnight Black, and Coral Blue.
Lee Prechan this “just vibrates” could be a screen issue. Your phone will vibrate if your display has failed. Of course you can follow the flowchart for the no power situation and see what it tells you.