Latest results of the comScore MobiLens service released just this week show a continuing trend of Android and Samsung dominance in the U.S. smartphone and mobile devices markets.

Android continues to stay at the top of the platform race, registering 43.7% share of the U.S. smartphone market for the 3-month average ending in August, 2011. Android’s market share grew by 5.6 points from the last 3-month average ending in May this year and up by 1.9 points from the July results.

comScore’s data also show that Apple is still crawling along, gaining a mere 0.7 points from May to August and up by 0.3 points from July results.

Research in Motion (RIM), Microsoft, and Symbian all registered negative growth. It seems that only Apple and Google are left standing in the U.S. smartphones game.

Top Smartphone Platforms
3 Month Avg. Ending Aug. 2011 vs. 3 Month Avg. Ending May 2011
Total U.S. Smartphone Subscribers Ages 13+
Source: comScore MobiLens
Share (%) of Smartphone Subscribers
May-11Aug-11Point Change
Total Smartphone Subscribers100.0%100.0%N/A

comScore also reports that the U.S. smartphone user base grew by 10% within the three-month period ending in August. The total number of U.S. smartphone owners is estimated to be about 84.5 million–and about 37 million (43.7%) of them has Android on their smartphones.

Within the same period covered in the report, Samsung has held on to its seat as top manufacturer of mobile devices. comScore reports that Samsung owns about a quarter (25.3%) of the U.S. mobile devices market, which is comprised of about 234 million Americans aged 13 and above.

LG and Motorola come in at second and third places, respectively. Apple is still hanging on to fourth place, while RIM takes last place.

Top Mobile OEMs
3 Month Avg. Ending Aug. 2011 vs. 3 Month Avg. Ending May 2011
Total U.S. Mobile Subscribers (Smartphone & Non-Smartphone) Ages 13+
Source: comScore MobiLens
Share (%) of Mobile Subscribers
May-11Aug-11Point Change
Total Mobile Subscribers100.0%100.0%N/A

The comScore MobiLens study surveyed a representative sample of 30,000 U.S. mobile subscribers aged 13 years and above.

How long do you think will it take before comScore’s data would report only a battle of the last two mobile platforms left standing–iOS and Android–and between the last two handset makers left alive–Apple and Samsung?

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