This document summarizes WeChat usage data from September 2016. It finds that WeChat had over 768 million daily active users, with typical users spending over 90 minutes per day on the app. Youth made up 14% of users and sent an average of 81 messages per day, while seniors accounted for 1% of users and sent 44 messages daily on average. Over 100 million audio and video calls were made on WeChat each day, with typical users making 8 calls per month.