Another big milestone for Google and Android. The company is
activating 700,000 devices per day.  That gives it a run rate of
255.5 million Android devices annually. It's impressive, but
it's actually lagging estimates for Apple's iOS.  In Piper
Jaffray analyst Gene Munster's "bull case" for Apple in 2013, he
sees the company selling 260 million iOS devices (iPhone, iPad,
iPod Touch).  But, as a commenter below points out, it's not
like Android is going to stop growing. It willl probably out run
Apple next year.  The chart below comes from Horace Dediu, and
it shows the impressive rise of Android.