Youth health is an app for people who are willing to exercise and pay attention to the quality of life. It can be used with wristbands and watches to record user movement and sleep parameters so that users can master the movement state. The app will use the device administrator privilege the phone lock screen function will be used in the sports mode page; the SMS and call log permission will be used to push the SMS and call information to the bracelet and watch in real time. Some wearable products also support the display of mobile phone contacts (Contact List) and call logs.