I don't think iOS' growth is stalling. It still sells in record numbers. It is the fact that Android's growth exploded by so much that it looked like iOS shrank in marketshare. But at this point based globally, it isn't a three-horse or even a match-race. It is a walkover by Android. I don't recall Symbian being this dominant in the previous generation of mobile OSes. The only continent that iOS can show a respectable bridesmaid finish is in North America where marketshare is much closer. A difference of 7-10% margin domestically sounds much closer than a 73% gap. Apple is still top OEM in the US and iOS has close to a 45% marketshare last I checked.
The company that looks to have "peaked" as a top OEM is Samsung. Search one-trick pony. Their Galaxy S5 has been a sales disappointment compared to its predecessor. And perhaps consumers are getting sick and tired of Samsung rehashes already or just content with the previous flagships to even bother upgrading by spending more money. On the plus side, people can also be waiting for the Note 4, Samsung's true flagship of the year. The recent rise of cheaper Chinese brands like Lenovo, Huawei and Xiaomi's recent ascent to #1 in China have also eaten into Samsung's lead. There is a steady decline to anyone once you reach the summit.
Some might say Samsung made Android more popular. Some might say Android made Samsung more popular. I think it could be a little of both. But once Samsung starts focusing more on Tizen, I believe the companies to lookout for are LG and some of the rising Chinese brands. The greatest growth potential is in the sub-$200 (no contract) segment. A race to the bottom (to get to the top) once the upper level prices get saturated enough.
