"There is little doubt that 2013 was the year of Android," said Neil Mawston, analyst with the consultancy.
"However, Android's annual growth rate slowed to 62 percent in 2013, its lowest level in the platform's history. We expect Android's growth to slow further in 2014 due to market saturation, and rivals like Microsoft or Firefox will be ready to pounce on any signs of a major slowdown for Android this year."
The report said Apple's global market share slipped to 15.5 percent in 2013 from 19.4 percent in 2012. MeanwhileWindows Phone grabbed third place with a 3.6 percent share, up from 2.7 percent a year earlier.
"Microsoft is now firmly established as the smartphone industry's third major ecosystem, shipping 35.7 million units worldwide," Mawston said.
"However, the Windows Phone platform is still struggling to gain traction in the low-tier and premium-tier smartphone categories and they remain serious weaknesses that Microsoft will need to address in 2014."
Strategy Analytics earlier this week said global smartphone sales rose 41 percent last year to 990 million. Samsung sold 319.8 million units to take 32.2 percent, up from 30.4 percent in 2012.