Top 8 Ways to Fix Cal­en­dar Not Sync­ing on iPhone

Pankil Shah

The calendar app on your iPhone helps you keep track of your schedule by reminding you of important dates and upcoming meetings. And syncing that data across all your devices makes things easier, allowing you to pick up where you left off. That is, of course, if the iPhone calendar is syncing correctly.

Top Ways to Fix Calendar Not Syncing on i Phone

If you’ve been missing out on meetings and deadlines because your iPhone can’t sync your calendar, then you’re at the right place. This guide offers a few troubleshooting tips that should get your iPhone to sync the calendar again. So, let’s check it out.

1. Refresh Calendars

You can start by refreshing your calendar first to see if that helps pull up new information. To do that, launch the Calendar app and switch to the Calendars tab. Then swipe down from the top to refresh it.

Calendars Tab
Refresh Calendar

2. Check Default Calendar

While your iPhone lets you add multiple calendar accounts, you’ll need pick one of them as the default account to hold all the events created on your iPhone. Thus, you'll need to ensure your preferred account is set as the default account.

Step 1: Open the Settings app and go to Calendar.

Calendar App

Step 2: Tap on Default Calendar and select your calendar account from here.

Default Calendar
Change Default Calendar

3. Check iCloud Sync Settings

If the problem persists, you can check the iCloud sync settings on your iPhone to make sure you’ve allowed the calendar app to sync data. Here’s how.

Step 1: Open the Settings app on your iPhone and tap on your name at the top.

Settings on i Phone

Step 2: Go to iCloud and toggle on Calendars.

I Cloud Settings
Enable Calendars

4. Enable Calendar Sync

If you’re facing sync issues with a third-party account such as Gmail, you need to verify if the calendar sync for that account is enabled. Here's how.

Step 1: Open Settings and navigate to Calendar.

Step 2: Go to Accounts and select the account you want to enable sync for.

Calendar Settings
Calendar Accounts

Step 3: Toggle on the switch next to Calendars.

Enable Sync for Calendar

5. Remove & Re-Add Account

If you’re still facing issues syncing the calendar on your iPhone, you can try removing your account and adding it again to see if that helps. Oddly enough, several users were able to deal with the issue using this method.

Step 1: Open Settings and go to Calendar.

Step 2: Tap on Accounts and select the troublesome account.

Calendar Settings
Calendar Accounts

Step 3: Lastly, tap on the Delete Account option at the bottom. Choose Delete from My iPhone when prompted.

Delete Calendar Account i Phone
Delete Account from i Phone

Once removed, add your account again to see if that resolves the sync issues.

6. Disable Low Data Mode

If you've enabled Low Data Mode on iPhone, the Calendar app will fail to refresh in the background. Hence you'll need to disable data saver on iPhone for the Calendar app to sync correctly.

Disable Low Data Mode on Wi-Fi

Step 1: Open the Settings app and select Wi-Fi.

Wi Fi on i Phone

Step 2: Tap the Info icon next to your Wi-Fi network and toggle off the switch next to Low Data Mode.

Wi Fi Networks on i Phone
Disable Low Data Mode on Wi Fi

Disable Low Data Mode on Cellular

Step 1: Open the Settings app and go to Mobile Data.

Mobile Data i Phone

Step 2: Tap Mobile Data Options and turn off Low Data Mode.

Mobile Data Options on i Phone
Disable Low Data Mode Cellular

7. Disable Low Power Mode

Low power mode on iPhone enhances your iPhones battery life by cutting down an apps’ ability to work in the background. So, if your iPhone is on low power mode, the calendar app might fail to sync data from the server.

To disable low power mode on iPhone, open Settings and navigate to Battery. Then toggle off the switch next to Low Power Mode.

Battery Settings on i Phone
Disable Low Power Mode i Phone

8. Check Date and Time Settings

If your iPhone has an incorrect date or time, then the calendar won't sync. Thus, it’s recommended that you set your iPhone to use network-provided time by following the steps below.

Step 1: Launch the Settings app on your iPhone and navigate to General.

Settings Menu in i Phone

Step 2: Tap on Date & Time. Toggle on the switch next to Set Automatically.

Date Time Settings on i Phone
Set Date Time Automatically on i Phone

After that, restart the Calendar app to see if it's working fine now.

In Sync With Your Needs

Because our calendars carry all the important meetings, deadlines, and milestones, such sync issues can be frustrating. The solutions mentioned above should help you get past the issue with ease.

Are you not happy with the calendar app on iPhone? You can try out some worthy Calendar app alternatives on iPhone.

The above article may contain affiliate links which help support Guiding Tech. However, it does not affect our editorial integrity. The content remains unbiased and authentic.

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Pankil Shah

Written By

Pankil Shah

Pankil is a Civil Engineer by profession who started his journey as a writer at He recently joined Guiding Tech as a freelance writer to cover how-tos, explainers, buying guides, tips and tricks for Android, iOS, Windows, and Web.