Set Default Calendar on iPhone, iPod touch, iPad

To set a default calendar on iPhone, iPod touch, and iPad, do the following:

1. Press Settings > Mail, Contacts, Calendars.
2. Go to the section labeled Calendars.
3. Press Default Calendar.
• If you do not see Default Calendar in the Calendars section, then your device has only one calendar.
4. Select the calendar you want to set as the default calendar for your device.
5. Press Mail... at the top of the screen to return to the previous page.