The latest data from comScore indicates the iPhone's share of the U.S. smartphone is growing and is now inching ever so close to 40%.
For the period covering the first three months of 2013, comScore's data shows that the iPhone's share of the U.S. smartphone market checked in at 39%, representing a mild gain from the period ending December 2012 when the iPhone accounted for 36.3% of the U.S. smartphone market.
Coming in second was Samsung with 21.7% of the market.
Of course, when the metrics turn to overall platform share, Apple takes a backseat to Android which accounted for 52% of the U.S. smartphone market during Q1 2013. Overall though, Apple's platform share went up by 2.7 percentage points while Google's Android lost 1.4 percentage points.
As evidenced by the chart above, Apple and Android together own 91% of the smartphone market and there's no indication that Microsoft and BlackBerry will be able to narrow that lead anytime soon, if at all.