**IMPORTANT NOTICE** If you are using OxygenOS 13, you may encounter the problem that the application will not start. Please try the following to resolve the issue: 1. Log out of the OnePlus account from the phone system settings; 2. Enter the OnePlus Health App to log in to your account. Health data Keep an eye on your health by recording and visualizing your daily activities, heart rate, sleep data, etc. Workout record Track your routes and record steps, workout duration, distance, and calories burned. Generate personal exercise reports to understand your progress. Smart devices Pair and manage various smart devices such as OnePlus Band and OnePlus Watch. Customize and sync notifications and sync incoming call info and recent call.