The latest smartphone sales data from Kantar Worldpanel ComTech shows Android has secured the number one spot in key world markets including Britain, China, Spain, Australia and Germany, however iOS is on top in the US and Japan.
Elsewhere, Windows is experiencing strong European growth, particularly in Britain and Italy, with shares hitting 5.9% and 13.9% respectively - up from just 2.2% and 2.8% a year ago.
At the end of 2012 the global OS picture shows Android on top, but clearly the rate of growth it experienced over the past year is beginning to slow as easy wins from first time smartphone buyers begin to reduce.
It has been far slower than Microsoft would have liked, but Windows Phone is now starting to gain respectable shares in a number of key European countries. However, its performance in the Chinese and US markets remains underwhelming. As the two largest smartphone markets in the world, these remain key challenges for Microsoft to overcome during 2013.
Among the handset manufacturers, Samsung has held onto the number one spot in Britain, claiming 35% of smartphone sales, although Apple is now biting at its heels with 32%. Nokia is experiencing something of a turnaround in Britain with its smartphone sales share at 6.2% and actual sales growing by over 50% compared with last year. Meanwhile, BlackBerry continues to find trading tough in the run up to the BlackBerry 10 release; however, its 9320 handset gave it a boost over Christmas with two-thirds bought as a gifts.
Smartphone percentage penetration in Great Britain hit 61% in the latest period, 82% of all mobile phone sales over the past 12 weeks were smartphones.
Read more on the Kantar Worldpanel website.