What you need to know OnePlus is preparing to launch a tiny OnePlus 13 model in China later this month. The OnePlus 13T will sport a 6.3-inch display and pack a large battery. In a Weibo post, OnePlus' head of China revealed that battery life was a focus point of OnePlus 13T development. OnePlus is gearing up to release a smaller version of the OnePlus 13, and this week has been full of teasers. The company first revealed that the OnePlus 13T would launch this month in China in an April Fool's Day gag. Now, President of OnePlus China Louis…