According to research company Gartner, Android will be the most popular mobile OS in the next four years(2015) reaching almost 50% market share. Meanwhile Windows Phone will catch up and overtake the 2nd place from iOS by 2015 with 20% market share.
Apple’s iOS will have the second place by the end of 2012, but Microsoft will overtake it by 2015. RIM will also have a user withdrawal when its migration from BlackBerry OS to QNX, the OS behind the Playbook, starts in 2012 according to Gartner.
This is what the latest Gartner’s report predicts.
Worldwide Mobile Communications Device Open OS Sales to End Users by OS (Thousands of Units)
| OS | 2010 | 2011 | 2012 | 2015 |
| Symbian | 111,577 | 89,930 | 32,666 | 661 |
| Market Share (%) | 37.6 | 19.2 | 5.2 | 0.1 |
| Android | 67,225 | 179,873 | 310,088 | 539,318 |
| Market Share (%) | 22.7 | 38.5 | 49.2 | 48.8 |
| Research In Motion | 47,452 | 62,600 | 79,335 | 122,864 |
| Market Share (%) | 16.0 | 13.4 | 12.6 | 11.1 |
| iOS | 46,598 | 90,560 | 118,848 | 189,924 |
| Market Share (%) | 15.7 | 19.4 | 18.9 | 17.2 |
| Microsoft | 12,378 | 26,346 | 68,156 | 215,998 |
| Market Share (%) | 4.2 | 5.6 | 10.8 | 19.5 |
| Other Operating Systems | 11,417.4 | 18,392.3 | 21,383.7 | 36,133.9 |
| Market Share (%) | 3.8 | 3.9 | 3.4 | 3.3 |
| Total Market | 296,647 | 467,701 | 630,476 | 1,104,898 |
