Unable to update calendars after iOS 12 update? This guide will show you how to fix iPhone calendar not syncing with iCloud/Gmail/Outlook in iOS 12. You can check the solutions to see if they are working for you.

iPhone Default App Issues

If you would like to share an Outlook calendar to other people rather than open a shared calendar from others in Outlook Web App, please check Sharing your calendar in Outlook Web App. To open a shared calendar from the sharing invitation, click Accept to open the shared calendar, and then you will see the shared calendar in the left pane under.

Nowadays, more and more businessmen and career staff like to use iPhone Calendar app to make daily schedules and some important upcoming events, let alone those people with poor memory. Calendar plays an important role in their working life. Besides iPhone calendar, you also use other calendar service, such as iCloud calendar, Google calendar, and Exchange calendar, etc. And you must always sync your iPhone calendar with these calendar services. This brings your life a lot of convenience. However, sometimes, you may come across an annoying issue that is iPhone calendar not syncing at all after iOS 12/11 update. No matter iPhone calendar not syncing with iCloud, not syncing with Gmail, or not syncing with Outlook, which will be very depressing.

This guide is going to share with you some potential methods about how to fix iPhone calendar not syncing with iCloud/Gmail/Outlook in iOS 12. Let’s see it in 3 parts.

Part 1. iPhone Calendar Not Syncing with iCloud

1. Make sure the switch for Calendar is turned ON. You can check this by going to Settings > Apple ID > iCloud > Calendars.

Make Sure Calendars is Turned On

2. Refresh your iPhone calendar. In the Calendar app, go to Calendars and drag the screen down for a refresh.

3. Reboot your iPhone. Hold down Power & Home button simultaneously.

4. Sync All Events by going to Settings > Calendar > Sync > Tap on All Events.

5. Use AnyTrans for iOS to manually sync iPhone calendar to iCloud.

1) Download and Install AnyTrans for iOS on your computer, connect your iPhone with USB cable.

2) Go to the category menu and select Calendars.

Select Calendars in AnyTrans for iOS – Step 2

Note: To let AnyTrans for iOS detect you calendar data on your iPhone, you need to disabled Calendar on your iPhone at first.

3) Select the calendar you want to sync and click the To iCloud button to sync selected calendar event to iCloud.

Sync Selected Calendar Event in AnyTrans for iOS – Step 3

You can also use AnyTrans for iOS to sync other kinds of iOS data to iCloud, like photos, notes, contacts, etc. Besides, it even allows you to sync data from one iCloud to another iCloud account directly.

Part 2. iPhone Calendar Not Syncing with Gmail

1. Also check if you enable Calendar on your iPhone. Go to Settings > Mail, Contacts, Calendars, select your Google account. Make sure that the Calendars option is enabled.

2. Set up Fetch feature. Go to Settings > Mail > Account > Fetch New Data, tap on your Gmail account and tap on Fetch, you can choose the frequency: Every 15 Minutes, Every 30 Minutes, Hourly or Manually.

Outlook For Mac Calendar View

3. Set your Gmail calendar as Default calendar. Go to Settings > Calendar > Sync > All Events. Then go back to Calendar, tap on Default Calendar and select Gmail calendar as default.

4. Re-add your Gmail Account. You can remove your Google account from Mail, Contacts, and Calendars, and then re-add it. But notice that if you do this, everything will get reset.

Part 3. iPhone Calendar Not Syncing with Outlook

1. Tyr to install and use Outlook app on your iPhone.

2. Syncing iPhone calendar to Outlook by using iTunes. Disabled Calendars on your iPhone, open iTunes on your computer and connect your iPhone. Click your device and click “Info” > Click Sync Calendars with and select Outlook.

3. Also try to set the Exchange Calendar as the default calendar on your iPhone.

4. Well, some users suggest just upgrade to new iPhone. This really works for many users.

The Bottom Line

That’s all for how to fix iPhone calendar not syncing issue after iOS 12 update, if you meet one of these three conditions, you can try out the methods mentioned above. Hope this guide is helpful for you. By the way, when facing iPhone calendar not syncing with iCloud, don’t forget to have a try on AnyTrans for iOS.

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Updated March 2017 with additional steps for un-syncing calendars.

If you accepted an invitation from someone to share a Google calendar but aren't seeing it on your iPhone, iPad, or Mac; it could be due to your Google Sync settings. Google turns sync off by default for new calendars, particularly shared ones. It's frustrating, and it's why you can't immediately see them on your iPhone, iPad, or Mac even when you can see them online. Luckily it's also simple to fix — once you know how!

How to get shared Google Calendars to show up on iPhone, iPad, and Mac

1. Launch Safari or any other web browser on your iPhone, iPad, or Mac.
2. Go to calendar.google.com/calendar/syncselect.
3. Sign in if you aren't already.
4. Under Shared Calendars, tick the boxes for the calendars you want to see on iPhone, iPad, and Mac.

It can take a few minutes for the calendars to appear. If they don't appear right away, close the Calendar app and reopen it.

How to stop a calendar from syncing across your devices

If you have a shared Google calendar that you only need access to every once in a while, so you don't want it on your iPhone, you can un-sync it. I share a practice space calendar with about a dozen people, which takes up pretty much all the space on my calendar app. Un-syncing it from Google's calendars makes my schedule look a lot less daunting.

1. Launch Safari or any other web browser on your iPhone, iPad, or Mac.
2. Go to google.com/calendar/syncselect.
3. Sign in if you aren't already.
4. Untick the box for any calendar you don't want to sync with your iPhone or iPad's Calendar app.

5. Click Save to save the settings.

From now on, those calendars won't even appear as an option for you to add to the built-in Calendar app (or even any third-party app that supports Google Calendar).

Any questions?

Do you have any questions about syncing shared Google Calendars with the built-in iPhone and iPad Calendar app? Put them in the comments and we'll help you out.

Allyson Kazmucha contributed to an earlier version of this article.

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Outlook Calendar On Mac

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