Update the mobile phone system
Some mobile phones will add virtual background function after updating the system. So, if your mobile phone doesn't support virtual background, you can try to update your mobile phone system. Go to the phone settings, find the software update, and check whether there is a new version. If so, you can try to update it and see if you can use the virtual background function.
Download third-party applications
If your mobile phone system does not support the virtual background function, you can try to download a third-party application. There are many applications that can provide virtual background functions. For example, Zoom and MicrosoftTeams both provide virtual background functions. You can search for virtual background applications in the app store and choose the one that suits you.
Using physical background
If your mobile phone doesn't support the virtual background function and you don't want to download third-party applications, you can choose to use the physical background. Choosing a clean and tidy background, such as white walls or windows, can make your video conference more professional. At the same time, you can also choose to use background board or background cloth to change your background.
If your mobile phone doesn't support the virtual background function, you can try to update your mobile phone system, download third-party applications or use a physical background. These methods can make your video conference more professional and efficient.