Tech reviewers tend to believe that "Glasstic" is a type of glass mixed with plastic and "UTG" is a form of bendable "glass". They do not know that these 2 are both made of pure plastic and just marketing terms made by Samsung.
No Samsung. UTG is the acronym of my University, University of The Gambia. so it's taken.
might be "ultra tall glass" since the first phone it will be used with will have an aspect ratio of 22:9.
could also be "ultra thick glass"- a variety of dense glass that's oblivious to geopolitics and trade wars.