As Android does not offer a native option, paid apps must be installed for this. The following instructions show the individual steps for the department with the app DAVx5 (previously Davdroid) under Android 14.0.0.
Selectregistration with URL and user name and enter the following data.
Base URL:
-> https://caldav.uni-bielefeld.de/principals/users/Uni-E-Mail-Adresse@uni-bielefeld.de/
Example: https://caldav.uni-bielefeld.de/principals/users/berta.musterfrau@uni-bielefeld.de/
Username:
-> Email address (for which the authorisation exists)
Password:
-> BITS password
Then click on REGISTRATION .
Now open the newly created account in the account overview.
Important:
The correct calendar must still be selected.
Unter dem Reiter CALDAV kann dann der Kalender (Hauptkalender) ausgewählt werden. Hier erscheinen auch die Unterkalender, falls vorhanden.
Tick the relevant calendar and click on the sync symbol at the bottom right.
You can then view the subscribed calendar via the device's calendar app (may need to be activated/added there).