How to Reset the Calendar on an iPhone

Delete entire calendars from your iPhone using the Settings menu, or delete individual items from the Calendar app.

Remove Calendars from Your iPhone

Delete calendars from your iPhone through the Settings menu.

Step

Tap the Settings button on your iPhone's home screen.

Step

Within the Settings menu, tap the Mail, Contacts, Calendars button to access all the calendar accounts synced to your device.

Step

Tap the calendar you want to remove from your phone.

Step

Tap the Calendars slider and tap the button that pops up to confirm you want to remove the account's calendar from your device. You can also touch Delete Account to remove mail, contacts and other data from that account.

Delete Individual Calendar Events

You can delete individual events from your iPhone Calendar app. There is no way to delete all events from a calendar in one step.

Step

Tap the Calendar icon on your phone's home screen.

Step

Tap an event on your calendar.

Step

On the event screen, tap Delete Event.