iPhone is a distant competitor to Samsung devices
The iPhone is getting a beat down courtesy of Samsung inside the Chinese market. The iPhone is available on two carriers in China today including China Telecom, which recently started selling the iPhone. The largest carrier in China is China Mobile and the iPhone is not on the network.
The reason the iPhone is not on China Mobile is that 3G network the carrier operates is not compatible. The iPhone will be available when China Mobile launches its TD-LTE network later. As of now, Samsung has 24.3% of the Chinese smartphone market leaving Apple with a 7.5% share.