Apple is now the #2 mobile platform in the US with 26.6% market share. Apple rose 1.4 percentage points and inched past RIM which now holds 24.7% of the US market. Similar to Apple, Android also gained market share grabbing another 5.1 percentage points to climb to 38.1% market share. Rim took the biggest plunge with a loss of 4.2 percentage points. These metrics are from Comscore's latest report which monitored smarpthone usage for the three-month period ending in May 2011.
On a manufacturer basis, Apple showed the greatest gain, jumping from 7.5% to 8.7% market share. Though it's far from being the leader (Samsung is #1 with 24.8%), Apple continues to move upward while rivals like Samsung, Motorola and RIM remained steady or slid slightly.
If this trend continues, the US smartphone market could become a two-horse race with Android and iOS vying for the lead. A third platform could grab the bulk of the leftovers. Right now RIM is sitting pretty in third, but if it continues its downward slide, it might lose its spot to the onslaught of Windows Phone handsets expected from the Microsoft-Nokia partnership.