The iPhone 4S (AAPL) went on sale in the U.S. on Oct. 14, and that, according to comScore,...

|By:, SA News Editor

The iPhone 4S (AAPL) went on sale in the U.S. on Oct. 14, and that, according to comScore, helped boost its October share of U.S. smartphone users (on a trailing 3-month basis) to 28.1% - up 70 bps from September's level. However, even in an iPhone launch month, Android's (GOOG) share grew faster, rising 150 bps to 46.3%. Research In Motion's (RIMM) share fell 170 bps to 17.2%.