Apple in two years has pushed the iPhone up to 2.5 percent of the entire cellphone market, Strategy Analytics estimates. The company has roughly doubled its share from a year ago and now has half the share of established firms Motorola and Sony Ericsson, which have remained flat at five percent. Some of the gain is likely to have come at Nokia's expense, as it shrank to 37 percent share, its lowest since the start of 2007.