During the drop-test video, Filip seemed pretty amazed by the iPhone X's durability, saying the "iPhone X seems to be one of the most durable phones I have ever tested on a drop, it's incredible." He believes the stainless steel frame on the iPhone X has something to do with its surprising durability.
And, of course, the glass on the iPhone X's front and back sustained no damage from a total of six drop tests from different angles; three from waist height, and three from head-height.