@lads said in DAVDroid only downloads calendars events during synchronisation.:
There is no e-mail address or other symbol that can differentiate between the “Personal” calendar of the phone itself and and “Personal” of my ownCloud account.
It depends on what app you are using. Even different versions of the system calendar app matters. Some app will only display the calendar name, which is very confusing to select the right calendar in this case. You can try different third-party calendar manager apps that can display the info more clearly.