One Ui as it sounds it is to make the UI be handled with one hand... In the older versions we use the other hand the go through other tabs....now we can do with one hand So far the devices which received One UI are 1.Galaxy Note 9 2.Galaxy S9 & S9 plus 3. Galaxy Note 8 (running 3rd beta update) 4.Galaxy S8 & S8 plus(running 3rd beta update)
