Apple gained enough market share to stay one of the top cellphone makers in the world, IDC said Friday. While not as strong as the spring, the iPhone still gained share from year to year and, at 17.07 million, was in fifth place among all cellphones at 4.3 percent. It was helped partly by Nokia's continued fall, which while still keeping it on top lowered it to 27.1 percent, at 106.6 million phones.