Smartphone Operating System and Shipment Statistics for first quarter of 2013 (Units in millions)

				1Q13										1Q12
				Shipment					1Q13 Market					Shipment					1Q12 Market					Year over Year
Operating System				Volume					Share					Volume					Share					Change
Android				162	.1				75	.0%				90	.3				59	.1%				79	.5%
iOS				37	.4				17	.3%				35	.1				23	.0%				6	.6%
Windows Phone				7	.0				3	.2%				3	.0				2	.0%				133	.3%
BlackBerry OS				6	.3				2	.9%				9	.7				6	.4%				-35	.1%
Linux				2	.1				1	.0%				3	.6				2	.4%				-41	.7%
Symbian				1	.2				0	.6%				10	.4				6	.8%				-88	.5%
Others				0	.1				0	.0%				0	.6				0	.4%				-83	.3%
Total				216	.2				100	.0%				152	.7				100	.0%				41	.6%

Source: IDC Worldwide Quarterly Mobile Phone Tracker, May 2013
Note: Information is preliminary and is subject to change.

Its not much of a surprise that Android and IOS continue to have a greater share of the smartphone market.  Its however quite interesting to note that Windows phone shipments have surpassed Blackberry despite the release of the BB10 earlier this year. Nokia has been a major contributing factor to this effect.