Research firm IDC is out with Q1 global smartphone estimates. These are shipments and not sales estimates. However the striking thing is that the market is totally dominated by Android and iOS. The former has about 60 percent share and iOS has 23 percent.
The estimates don’t include tablets/iPads however.
Windows is seen shipping more units than last year; but, again, this is not indicative of sales. The platform has seen some sales success this year but not uniformly across markets.
Compare Gartner global smartphones numbers below, which are generally consistent with the IDC figures above.
Finally here are the most recent comScore US (not global) smartphone share figures.