When calendar events stop syncing on your Xiaomi 15 Ultra, appointments can go missing or appear outdated across devices. This can quickly become a problem if you rely on your phone for schedules, reminders, or work meetings. In most cases, the issue is related to sync settings, account permissions, or background restrictions, all of which are easy to fix.
Why Calendar Events Are Not Syncing on Your Xiaomi 15 Ultra
- Calendar sync is turned off for your Google or Mi account.
- Background activity is restricted to save battery.
- Data sync is paused or limited in system settings.
- The Calendar app cache is corrupted.
- Internet connection is unstable or restricted.
1. Make Sure Calendar Sync Is Enabled
Calendar events rely on account sync to update across devices. If sync is disabled, new events will stay local and never upload to your account.
Open Settings, and then tap Accounts and sync.
Tap your Google account, and then make sure Calendar sync is turned on.
2. Check Your Internet Connection
Calendar syncing requires a stable internet connection. If your connection drops or switches frequently, events may fail to update.
Open Settings, and then tap Wi-Fi.
Connect to a stable network, and then turn mobile data on as a backup if needed.
3. Allow Background Activity for Calendar
Battery optimization can stop the Calendar app from syncing in the background. This often causes delays or missing events until you open the app manually.
Open Settings, and then tap Apps.
Tap Calendar, and then set Battery saver to No restrictions.
4. Turn On Auto Sync for Data
Auto sync allows apps to refresh data automatically. If it is turned off, calendar updates will not sync unless triggered manually.
Open Settings, and then tap Accounts and sync.
Turn on Auto sync data, and then wait a few minutes for updates to appear.
5. Clear the Calendar App Cache
Corrupted cache files can interfere with syncing. Clearing the cache refreshes the app without deleting your events.
Open Settings, and then tap Apps.
Tap Calendar, then tap Storage, and clear the cache.
6. Remove and Re-add Your Account
If syncing still fails, your account connection may be broken. Removing and adding the account forces a fresh sync with the server.
Open Settings, and then tap Accounts and sync.
Tap your Google account, remove it, and then add it again after restarting your phone.
Calendar sync issues on the Xiaomi 15 Ultra are usually caused by simple settings that quietly change in the background. Once sync is enabled and background activity is allowed, events should update automatically and stay consistent across all your devices.
FAQs
Why do my calendar events sync only when I open the app?
This usually means background activity is restricted. Allowing the Calendar app to run without battery limits fixes this behavior.
Will clearing the Calendar cache delete my events?
No. Clearing the cache only removes temporary files. Your events remain safe in your account.
Why are events syncing on my computer but not on my phone?
Your phone may have sync turned off for the calendar account. Enabling Calendar sync in account settings resolves this issue.
