Calendar on iPhone 4s does not work with iOS 7. It stopped working 2 days ago. It won't open on the phone. iCloud is working fine and so is iCal on my MacPro.

How do I get it to work again?

  • 1
    What do you mean by "it does not work" ? Does the app crash at launch ? Oct 31, 2013 at 16:51
  • Yes. It does not open. Two days ago it was fine. The reminders stopped working around the same day. Neither will open. Each starts to open when I touch the app button and then each freezes without opening. If I leave the screen alone, the phone returns to the home screen after 10 - 15 seconds. Thanks in advance for help.
    – John
    Oct 31, 2013 at 17:37
  • I resent the iPhone and all is working now.
    – John
    Oct 31, 2013 at 18:59

3 Answers 3


Make sure you have a Calendar set up in iOS, either an iCloud calendar (Settings -> iCloud) or another one (Settings -> Mail, Contacts, Calendars). If your only calendars are read-only, like Facebook Events and Birthdays, you won't be able to create events.

In iOS 7 and 8, you can check the calendars that have been set up by tapping "Calendars" at the bottom of the calendar view. If you don't see an iCloud calendar or another one you can edit, you'll need to create one.


The initial set of troubleshooting steps might be:

  1. Attempt a backup of the device.
  2. Power off the device.
  3. Check that the calendars are still working by logging into the web interface using a computer while the iOS device is powered off to ensure that the service is up and your account is working properly.

At that point, you can restart your phone and start down troubleshooting if it still is misbehaving.


Go to "Mail, Contacts, Calendars" , under "Accounts" go to "iCloud" and make sure the "Calendars" is on "ON".

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