OnePlus
Delete a Calendar Event auf OnePlus
Deleting an event in the OnePlus Calendar app removes it from your schedule, but the process changes depending on whether the entry repeats. A single, non-recurring appointment disappears as soon as you confirm the deletion. A recurring event, however, is handled by the calendar's series logic, which is why OxygenOS asks you to specify the scope of the deletion.
To remove an event, open the Calendar app, tap on the day it falls on, and select the event from the day view. Open the menu and tap on Delete. If the event repeats, choose between This event, This and following events or All events, then confirm with Delete.
Choosing This event only removes the selected occurrence and keeps every other date in the series untouched. This and following events splits the series, deleting the selected date and everything after it while leaving earlier occurrences intact. All events removes the entire series, including past occurrences.
If the calendar is synced with an account, deletions usually sync across devices as well. Deleted events cannot be restored through the app itself, so double-check the scope before confirming, especially with recurring entries.