Sorry for my laziness. A bit of googling reveals: http://economictimes.indiatimes.com/small-biz/startups/ubers-quest-to-win-over-china-faces-wechat-hurdle/arti

Sorry for my laziness. A bit of googling reveals: http://economictimes.indiatimes.com/small-biz/startups/ubers-quest-to-win-over-china-faces-wechat-hurdle/articleshow/48675838.cms http://economictimes.indiatimes.com/small-biz/startups/ubers... and http://venturebeat.com/2015/08/24/ubers-wechat-drama-exposes-the-unique-challenges-of-winning-in-china/ http://venturebeat.com/2015/08/24/ubers-wechat-drama-exposes... Apparently they've been blocked from WeChat...