Microsoft’s (MSFT) Windows is making mobile market headway both with smartphones and tablets, according to researcher IDC’s latest Q2 2013 figures on mobile devices.

IDC noted that among the top five smartphone platforms, Windows Phone recorded the biggest year-over-year market share jump with a 77 percent increase in unit shipments to hold a 3.7 percent share of the market. That’s the good news. The bad news is that Windows Phone still isn’t close to shouting distance of Apple (AAPL) iOS's 13.2 percent stake and Google (GOOG) Android's whopping 79.3 percent of the segment.

Some other lukewarm news is that outside of Nokia (NOK), which leads the Windows Phone charge with 7.1 million units shipped during the period—accounting for nearly 82 percent of all smartphones shipped on the platform—there isn’t much to write home about. Samsung is a distant second with 1 million units shipped for the quarter.

Still, Windows Phone may be able to carve out a position behind Android and iOS once reserved for BlackBerry (BBRY), said Ryan Reith, IDC mobility tracker program manager.

"Last quarter we witnessed Windows Phone shipments surpassing BlackBerry and the trend has continued into the second quarter," said Reith. "Nokia has clearly been the driving force behind the Windows Phone platform and we expect that to continue. However, as more and more vendors enter the smartphone market using the Android platform, we expect Windows Phone to become a more attractive differentiator in this very competitive market segment."

Overall, smartphone vendors shipped a total of 236.4 million smartphones in 2Q13, up 51.3 percent from the 156.2 million units shipped during the same period last year. Viewed sequentially, Q2 2013 smartphone shipments grew 9.3 percent when compared to the 216.3 million units shipped in the prior quarter.

As for tablets, Microsoft has to be buoyed by IDC’s soft-voiced suggestion that its Windows 8 operating system is starting to make a dent in the vice grip held on the market by iOS and Android. According to IDC’s Q2 2013 worldwide tablet shipment totals, the global market share of Windows-enabled tablets more than quadrupled in Q2 to 4 percent—still far behind iOS and Android, which together gobble up 95 percent of the segment.

But again, Microsoft’s OS gain with tablets is hard to ignore.

"The tablet market is still evolving and vendors can rise and fall quickly as a result," said Reith. "Apple aside, the remaining vendors are still very much figuring out which platform strategy will be successful over the long run. To date, Android has been far more successful than the Windows 8 platform. However, Microsoft-fueled products are starting to make notable progress into the market."