The International Data Corporation (IDC) indicates that Apple’s share of tablet devices has gone down in the third quarter of 2012. Apple’s had a share near two-thirds of all tablets before, but that has diminished to barely over half in the third quarter.

Samsung, Amazon, Asus and Lenovo gained market share at Apple’s expense. Samsung shipped 5.1 million units worldwide in the third quarter, up 115 percent from the second quarter, by far the most impressive of all the makers.

Amazon began shipping a new 7-inch HD Kindle in mid-September. They boosted Amazon’s global market share from 4.8 percent in the second quarter of 2012 to 9 percent in the third, despite shipping only in the U.S.

IDC said share growth for Asus was backed by strong shipments of its Google-branded Nexus 7 tablet, while Lenovo’s gains were driven by strong shipments in China. Worldwide tablet shipments totaled 27.8 million units in the third quarter of 2012, according to IDC and the tablet market grew 49.5 percent year-on-year in 3Q and 6.7 percent over the second quarter.

Source: EE Times