If you use a vivo mobile phone, the healthy use function of the device can help you know the specific daily use time of the screen, and there are also functions such as "Stop Time", "Available Time" and "Application Limit" for you to set and choose. You can turn on this function by going to I Manager-Utilities-Healthy Devices or Settings-Healthy Devices.
If you have any other questions in use, you can go to vivo official website /vivo Mall APP-My-Online Customer Service or vivo official website Web Edition-Sliding Bottom-Online Customer Service-and enter the manual customer service for consultation and understanding.