Anusan12 , via OnePlus 7 , Jan 22, 2021 : I want to backup my system for an os 11 beta update. Where do I do it?
Artemus. , Jan 22, 2021 : Either through OnePlus Switch (easiest method) or through the system backup and restore. Either way, you'll want to move the backed-up file off your phone should you wipe it.
jontalk , Jan 22, 2021 : You can also go to Settings>Google account>backups..its probably turned on and will show the last time it backed up to Google Drive. You can back up manually too.
Iamhasannaqvi , via OnePlus 7 , Jan 23, 2021 : Enable auto backup and see if everything is backed up in either Google drive.
KaranFafat , via OnePlus 7 , Jan 24, 2021 : Use Oneplus switch to transfer all the data to another mobile.