News from Comscore that offers quarterly ranking with the spread of smartphone operating systems in the USA. Data comparing the end of June to September 2011 and portrayed a situation really complicated.

Windows Phone is making progress but has not yet managed to take off in the stopping at 5.6% of the market. Symbian is now near clinical death and RIM continues to see the ground crumble under the feet with a loss of 4.6%.
Guess who is increased by 4.6 percentage points? Yes, Android is the only OS that is growing and increasingly closer to 50% of the market.
In October, however, have come iPhone 4S and Nokia Lumia, models that could bring about Apple and Microsoft, expecting for the year-end charts to find out.