How to Add or Remove iPhone Calendarsby Scott KnickelbineUpdated September 28, 2017
The iPhone has the ability to sync with several online calendars and combine them all into a single calendar view on your phone. If you're maintaining calendars on Google, Yahoo, MSN or other web services, you can have your iPhone poll them regularly for calendar updates. The different calendars are consolidated in a single calendar on your iPhone, but are color coded so you can tell where a specific event originated. Adding or deleting calendars is fairly simple to do, as long as you have the login information for the service which hosts your calendar.
Tap the “Settings” icon on your home screen.
Tap “Mail, Contacts, Calendars” on the “Settings” menu.
Tap “Add Account…” in the “Mail, Contacts, Calendars” menu.
Tap “Other” on the “Add Account…” menu.
Tap “Add Subscribed Calendar” on the “Other” menu.
Enter the name of the server that hosts your calendar on the “Subscription” screen, and tap “Next.” You'll find the server address for your online calendar in the settings, usually under “ICAL address.” It will look something like: “www.google.com/calendar/ical/mycalendar%40gmail.com/public/basic.ics.”
Tap “Save” on the “Subscription” screen. You will be taken back to the “Mail, Contacts, Calendars” menu, where you will see the new calendar account in your account list.
Delete a calendar by tapping on it in the “Mail, Contacts, Calendars” menu. Tap the red “Delete Account” button on the bottom of the next screen, and then again in the verification box that slides up.
If you don't want to type out a long calendar server name, you can cut and paste it from your computer screen into an email to your iPhone, and then copy and paste it to the address field. When you view your iPhone Calendar, you will see the calendar entries from your subscribed calendar, preceded by a color coded dot. Each calendar you subscribe to will have its own color code.
Be sure to enter the calendar server name accurately. Failure to do so will cause the subscription process to fail on your iPhone.