Android may still be the most popular mobile OS in China, but local e-commerce giant Alibaba Group continues to offer its own alternative, and has just landed its biggest partner yet. Chinese smartphone maker Meizu will use Alibaba’s YunOS mobile operating system to power its own handsets, it announced Tuesday. Previously, Meizu ran a customized version of Android called Flyme OS on its smartphones, but said Alibaba’s software could offer better security and performance, including longer battery life.