Apple has started the investor call for its huge Q1 2015 earnings release, and CEO Tim Cook took a moment to announce that the company has now shipped more than 1 billion iOS devices. That milestone was hit back in November; Cook says that the specific device was a space grey, 64GB iPhone 6 Plus — but he said that "we've saved it here at Apple." He didn't elaborate; maybe the company shipped unit 1,000,000,001 to that customer.
To put that number in perspective, Google said it activated more than 1 billion Android devices way back in September of 2013 alongside the announcement of Android KitKat. It's been known that Android's adoption rate has exceeded that of iOS for some time now, but this gives us a clearer picture where the two dominant mobile operating systems stack up.