Google Android strengthened its lead in the US smartphone market as of February 2011, accounting for 33% of smartphone subscribers, up 7.0 percentage points from the previous three-month period, according to data from the comScore MobiLens service.

RIM ranked second, but slipped 4.6 percentage points (PPs) to 28.9% of market share as of February. Apple was third with 25.2%, despite Verizon's much anticipated release of the iPhone 4 on February 10. Microsoft and Palm both lost ground during the month, accounting for 7.7% and 2.8%, respectively.

Some 69.5 million people in the US owned smartphones as of February, up 13% from the preceding three-month period.

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