1. Select Healthy Use of Mobile Phone to open the phone settings interface, and select Healthy Use of Mobile Phone and click Enter.
2. Click "Open" to enter the user interface of healthy mobile phone, and then click "Open" to enter.
3. Select a sub-usage to enter the selection user interface, click Select a sub-usage, and then click OK below to enter.
4. Set the password. After entering the password setting interface, set the password as needed.
5. Open the screen to use time management. After setting the password, turn on the switch behind the screen to use time management, and then set it in the options below.