#5 China

Smartphone users – 24 per cent of total mobile phone users

Total number of Smartphone Users – 270 million

Android already accounts for 90 percent of new Smartphone purchases in China, a trend that is alarming the government enough that it is complaining about it. The volume of Smartphone shipments in China hit 70 million in the fourth quarter --a 112 percent year-on-year increase. Foreign firms like Samsung were the first to bring Android to China, and homegrown manufacturers like Lenovo -- set to become the top-selling Chinese Android handset maker this year -- are coming on strong. But they may all be eventually swamped by cheap commoditized handsets from more than a thousand no-name manufacturers, which TechRice's Kai Lukoff has dubbed "ChinaDroids."

By releasing Android into the wild, Google may have irrevocably tilted the playing field against China's Internet restrictions. Now the same ruthlessly efficient and low-margin companies that transformed China into the world's pre-eminent manufacturer could end up powering a Smartphone wave that drowns its censors under billions of Weibo posts.

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