Information / Solution
In the majority of cases, a software update does not remove any personal data from your Xperia™ device.
We do recommend, however, that you back up photos, videos and other personal content to a non-internal memory, for example, an online backup option which saves your data to online servers (the cloud). You can do this using
Android 10 or higher : Settings > System > Backup
Android 9 : Settings > System > (Advanced) > Backup
Android™ 8.x : Settings > System > Backup
Lower Android™ versions : Settings > Backup & reset