Gartner on Thursday chipped in a long-term prediction of its own for smartphone share that gave Android nearly half of the market. It expected Google to jump to 38.5 percent of the market this year to reach 48.8 percent in 2015, or 539.3 million phones. The company would be riding the back of an open OS wave where the devices were "democratized" and would cost $300 or less off-contract, principal analyst Roberta Cozza said.