If you use a vivo phone, after the device is connected to the network, you can detect the system update by entering Settings-System Upgrade, and some models need to enter Settings-My Device-iQOO? (monster)? UI version /Funtouch? OS version, check the system update. If the prompt "Your system is already the latest version", the current mobile phone system is the latest version.
If you have more questions, you can go to official website /vivo Mall APP-My-Online Customer Service or vivo official website Web Edition-Slide to the bottom-Online Customer Service-and enter the manual customer service for consultation and understanding.