iOS and Android further consolidated their dominance of smartphone platforms in the US during a three-month period ending in November, according to new comScore data. Google's Android rose from 52.6 percent in August to 53.7 percent in November, while Apple's iOS advanced from 34.3 to 35 percent. Losing out in the battle were RIM -- slipping from 8.3 to 7.3 percent -- and Microsoft, which dropped 0.6 points to 3 percent. Symbian dwindled an extra 0.2 points to 0.5 percent.
