Google's Android mobile phone OS has shown exceptional growth for the year ending May, according to new data from market researcher Quantcast.
The data clearly shows Apple's iOS out in front, with a share in mobile traffic of nearly 60 per cent.
But the data also indicates a rapid increase in the market share of Google's operating system.
According to Quantcast, Android currently accounts for 19.9 per cent of the smartphone market, a rise of 12.2% over the year. Although it's still the single biggest player in the market, the share of Apple's iPhone OS has shrunk by 8.1 per cent.
The data shows that Research In Motion's Blackberry OS and other platforms in the operating system market have shrunk by 1.2% and 2.9% respectively.
The statistics will test claims made by Apple boss Steve Jobs at Apple's annual World Wide Developer Conference (WWDC) last week, that mobile market studies do not interest him at all.
Apple's decline in the OS market has been mainly due to the success of the latest Android-based devices including Motorola's Droid, HTC's Incredible and Sprint's Evo 4G.
Qualcast's figures are based on mobile traffic attributed to each operating system, rather than handset sales.