The following lists the top smartphone operating systems by market share in the United States in July, according to research firm comScore.
ComScore conducts monthly user surveys. The following list is derived from a three-month average ending in July of U.S. mobile subscribers over the age of 13. ComScore asked respondents what type of phone they own, and derived operating system information based on those responses.
According to comScore's numbers, around 32 million Americans own a smartphone, while around 200 million own a "non-smartphone" (or a device that does not feature an open operating system).
These numbers represent current phone ownership at a specific point in time, rather than the total number of devices sold with a particular operating system.
These numbers are the most recent available from comScore, and represent the market situation after the introduction of the Palm Pre and the iPhone 3GS. However, the Pre's webOS operating system is not listed because the device does not yet have a large enough installed base to accurately be counted by comScore's survey. Palm recently said it sold 823,000 smartphones in its most recent quarter, and that the "vast majority" of those phones were webOS-based Pres.
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For February numbers, click here. For May numbers, click here.
