According to this new report from Gartner, 428 million mobile phones were sold worldwide in the first quarter of 2011, representing a 19 percent increase from the same period a year ago.
In terms of manufacturer, Nokia is still number one with 107.6 million units. Samsung, LG and Apple followed with about 68.8 million, 24 million and 16.9 million respectively.
In terms of operating system, Google's Android OS continues to dominate the phone market, with 36.3 million units sold during this period. Nokia's Symbian OS is second with 27.6 million units, and Apple's iOS is third with 16.9 million units. RIM is in fourth position with 13 million units.
For Microsoft, this is what Gartner has to say:
Windows Phone saw only modest sales that reached 1.6 million units in the first quarter of 2011, as devices launched at the end of 2010 failed to grow in consumer preference and CSPs continued to focus on Android. In the long term, Nokia's support will accelerate Windows Phone's momentum.
You can read Gartner's press release here.