Strategy Analytics released the latest numbers yesterday. Year-over-year, Android gained in global market share from 78.9% to 81.2%. iOS declined from 15.5% to 15.0%. 4Q numbers always look good for Apple because of their release cycle. Year over year is more helpful.
That said, leveling off is pretty much a given at 80%... hard to push above that in any technology product sector.
Maybe Pareto's Rule is coming into play in some way?