The researchers reported Monday that BlackBerry remains the most widely used smart phone system in the US, with 41.6 percent of the market – one point less than in the previous quarter.
Apple gained 1.2 percentage points to reach 25.3 percent of the US smart phone market.
Microsoft took 18 percent of the market, followed by Palm with 6.1 percent and Google with 5.2 percent.
Motorola remained top US handset hardware maker in the quarter, with 23.5 percent market share. Its closest competitors, LG Electronics and Samsung, made 21.9 percent and 21.2 percent of all phones used in the US, followed by Nokia Corp. and RIM.