Research firm IDC is out with its latest numbers for Q1 2013 today tracking worldwide smartphone shipments by OS and OEM noting Android and iOS combined accounted for 92.3% of all shipments during the quarter.

IDC noted that Apple and Android  shipments combined increased year over year approximately 59.1% with a total of 199.5 million units shipped worldwide during Q1. That’s up from just 125.4 million a year ago. Apple is clearly a large driver of the growth with the report pointing out that iPhone had its “largest ever first quarter volume.” However, despite that, Apple also saw a decline among usage of iOS compared to growth of the industry as a whole, allowing Android to keep its top spot by OS and Samsung to remain number 1 by OEM.

How far is iOS behind Android? According to IDC it accounted for 17.3% of the market in Q1 compared to 75% for Android. Of course this is likely taking shipments (not sales) into account and also doesn’t represent tablet usage that we know iOS continues to dominate. 

Microsoft was able to surpass BlackBerry during the quarter to take third place with Windows Phone growing 133.3% year over year and capturing 3% of shipments (thanks to Nokia) compared to 6.3% for BlackBerry OS. IDC does note, however, that BlackBerry ” shipped more than a million units running on its new BB10 platform.”

As always, IDC doesn’t provided data showing shipped vs sold figures.