It was on track to happen, and it did: Apple passed Research In Motion as the No. 2 smartphone in the United States, with Google's Android phones not only retaining the top spot, but increasing their lead.
In February, when comScore last did the measurement, Android phones had 33 percent of the smartphone market in the U.S.; as of May, they had 38.1 percent. And RIM, maker of BlackBerrys, went from a 28.9 percent share to 24.7 percent; Apple went from 25.2 percent to 26.6 percent.
Phones using operating systems from Microsoft and Palm had decreases in market share during the three-month period. Microsoft went from 7.7 to 5.8 percent; Palm OS phones, from 2.8 to 2.4 percent. (Msnbc.com is a joint venture of Microsoft and NBC Universal.)
In comScore's study, more than 30,000 U.S. mobile subscribers were surveyed. Samsung was found to be the top handset manufacturer overall, with a 24.8 percent market share, LG with 21.1 percent, Motorola with 15.1 percent, Apple with 8.7 percent, and RIM with 8.1 percent.
And more of us continue to migrate to smartphones, with one in three cell phones being smartphones in the U.S.; comScore said 76.8 million people in the U.S. owned smartphones during the three months ending in May 2011, up 11 percent from February.
The firm's findings are in line with those from Nielsen, which recently said that 55 percent of U.S. consumers who purchased a new handset in the past three months reported choosing a smartphone over a feature phone, up from 34 percent just a year ago.
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