On my iPhone calendar, recurring reminders are being duplicated, and even when the initial recurring reminder has ended, the duplicates keep on showing up, and there's no way to delete them either.
I had this issue some time ago, then an update fixed it but now it's back again after the last update.
I have tried restarting my phone but that didn't do anything.
I had a look online with the terms above and I found an Apple Support page that helped. I had an extra calendar from another email provider, and I turned off the Reminders in Settings for that calendar and now my duplicates have disappeared. I think they must have come from the other calendar, even though I don't use it anymore for reminders.
The Apple page: If your iCloud Contacts, Calendars, or Reminders won’t sync - Apple Support
I hope this helps you!
To fix phantom and duplicate recurring reminders stuck in your iPhone Calendar that refuse to delete, you need to force a complete local cache reset of the sync link between the Apple Reminders database and the Calendar app by toggling iCloud sync and hiding the reminder layer.
I'm having this same problem with reminders in the calendar. Please elaborate, WheelieNick, on your solution. What are the steps and where in the iOS system are those steps taken to accomplish that reset?
iPhone Calendar: Recurring reminders duplicate, won't delete
