Problems with sync

On most Android devices, the Calendar app is automatically synced with the Google Calendar server, and vice versa. If you experience problems with sync, these troubleshooting steps may help:

Check your network connection

The Calendar app needs an active data connection (mobile network or Wi-Fi) to sustain auto-sync.

  • Make sure your device is not in Airplane mode.
  • Make sure your device has a working signal.
  • Verify that your device can get online (try going to a website in Browser).

Make sure Auto-sync is enabled

  1. Press your device's < Home > button, then press < Menu >.
  2. Select Settings.
  3. Select Accounts & sync.
  4. Make sure the checkbox for Auto-sync is checked.

Turn sync off and on

  1. Press your device's < Home > button, then press < Menu >.
  2. Select Settings.
  3. Select Accounts & sync.
  4. Select the account with sync problems.
  5. Uncheck the box next to Sync Calendar to disable Calendar sync. Then check the box to re-enable Calendar sync.
    Note: If the box next to Sync Calendar was unchecked, simply check the box to re-enable Calendar sync.

After completing these steps, wait for auto-sync to resume (this may take several minutes).

Restart your device

  • To restart your device, press and hold the < Power > or < End call > button, then select Power off. Press the < Power > or < End call > button to power on.
  • Your device will re-sync with the server after restarting (this may take several minutes).

Check for low memory notifications

Calendar does not automatically sync when internal memory is low.

  • Press your device's < Home > button, then press < Menu >. Select Notifications. If you have any system notifications about low memory, we recommend taking steps to free up internal memory (deleting unused applications) in order for Calendar to sync.

Check for account notifications

  • Press your device's < Home > button, then press < Menu >. Select Notifications. If you have any system notifications about a sign-in or password error, you should make sure your account information is correct in order for Calendar to sync.

Check for Calendar server issues

Sometimes a problem with the main Google Calendar servers can prevent the Calendar app from auto-syncing. Server problems are temporary, but you can always check to see if your account is experiencing a server issue by signing into http://www.google.com/calendar on a computer. Any access issues or server error messages you encounter on a computer are likely to simultaneously affect sync with the Calendar app.

Check your Google account password

If you signed up for 2-step verification, you may need to enter an application-specific password in place of your regular account password. You can generate an application-specific password on your Authorizing applications and sites page.

Clear your device's Calendar application data

Warning: After performing the following steps, events from more than 30 days ago will no longer be available for viewing on your device. Rest assured these events remain saved on the main Google Calendar server and are accessible via the web. Further, these steps will cause your Calendar app settings (e.g., Calendar notification ringtones) to be reset.
We recommend proceeding with these steps only if the above steps did not resolve the issue.

  1. Press your device's < Home > button, then press < Menu >.
  2. Select Settings.
  3. Select Applications, then Manage applications.
  4. Select Calendar Storage.
    Note: If you don't see 'Calendar Storage,' press < Menu > again, then select Filter > All. On some devices, you won't see 'Calendar Storage.' It is fine to ignore this step if it doesn't apply.
  5. Select Clear data. Answer OK when prompted.
  6. Restart your device. Press and hold the < Power > or < End call > button, then select Power off. Press the < Power > or < End call > button to power on.

Your device will re-sync with the server after restarting (this may take several minutes).