As far as I can tell the left & right bubbles UI was first seen on (or at least first popularized by) the SMS app on the original iPhone in 2007.
As another commenter suggested it seems the point was to associate it with the placement of the right-side enter button, as the message would animate up and to the right.
Comments
As far as I can tell the left & right bubbles UI was first seen on (or at least first popularized by) the SMS app on the original iPhone in 2007.
As another commenter suggested it seems the point was to associate it with the placement of the right-side enter button, as the message would animate up and to the right.