Research In Motion, the BlackBerry-maker, can't seem to catch a break when it comes to dwindling market share.
Based on smartphone platforms, RIM's U.S. share has fallen to 9.5 percent during the three-month average period ending in July, according to comScore. Its share was 11.6 percent during the three-month period ending in April, comScore reported.
RIM still ranks as the third-largest smartphone vendor, although its piece of the pie is minuscule compared to rivals Apple and Android.
Google's Android, the platform powering many phones made by Samsung, Motorola Mobility and other original equipment manufacturers, controls more than half (52.2 percent) of the market, according to comScore. Apple, the iPhone-maker, holds 33.4 percent, comScore noted.
RIM, headquartered in Waterloo, Ontario, Canada, is counting on its yet-to-be-released BlackBerry 10 platform to revitalize its smartphone brand.
Based on worldwide mobile device sales in the second quarter, RIM held a modest 1.9 percent market share with 7.99 million units sold, according to Gartner figures released last month. In the year-ago quarter, RIM controlled 3 percent share with 12.65 million units sold, Gartner said.