When Apple first became available in China, the "status" drove sales. But, that market was quickly saturated. The Chinese market typically demands several things of a smartphone: microSD support and swappable batteries. Phones without those abilities are simply not as well received. Some manufacturers make special products just for the Chinese market, like HTC does with their One model. In the US and Europe, the HTC One is completely sealed, no access to battery, no microSD slot. But in China, the HTC One has at least the microSD because that market demands it. In China, they put a lot of video onto microSD to play on their devices, whether phone or tablet. The Apple system requires those videos to be converted on a host computer before they will play on the device. Android typically does not require any conversion, it plays many more formats than Apple. The microSD can be loaded up with movies and tv shows to watch on the commutes to/from work and school.
Apple doesn't seem to understand the Chinese market. They had the initial status-driven people, but those don't offer continued sales/growth.