New quarterly data indicates little change in the US cellphone market, according to research firm ComScore. Android devices continue to dominate as a platform, up 0.8 percent to account for 50.9 percent of smartphones. Apple's iPhone, meanwhile, has grown 1.7 percent to claim a 31.9 percent share. Research in Motion has fallen 2 points to 11.4 percent, while Microsoft is up a tenth of a point to 4 percent. Symbian continues to lose remaining ground, dipping 0.4 percent to a 1.1 percent share.