Here’s a must-read chart for anyone who follows the mobile industry.

Nielsen today released new data for the U.S. smartphone market, showing not only usage by operating system but also the reach of individual device makers within each mobile platform. Android is at 51 percent of the market, Apple’s iPhone is at 34 percent and Blackberry is at 9 percent, but some of the more interesting factoids relate to Microsoft effort to rebound in the mobile market.

Overall, Windows Phone has 1.3 percent of the market, and Microsoft’s legacy Windows Mobile platform has 3 percent.

Nokia’s Lumia line of Windows Phones have captured 0.3 percent of the U.S. market, according to the data. Among the ranks of Windows Phone device makers, that puts Nokia behind HTC and Samsung, with 0.5 percent each.

Microsoft and Nokia launched the Lumia 710 on T-Mobile USA in January and the flagship Lumia 900 in April on AT&T. Both HTC and Samsung have had Windows Phone devices on the market for longer periods of time.

Overall, Nielsen says that two-thirds of Americans who bought mobile phones over the past three months opted for smartphones vs. standard cell phones.

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