When contacts on your Xiaomi 15 Ultra stop syncing, new numbers may not appear, old ones may disappear, or changes fail to update across devices. This issue often shows up after a system update, an account change, or a background restriction. The good news is that contact syncing problems are usually caused by simple settings that you can fix in just a few minutes.
Why Contacts Are Not Syncing on Your Xiaomi 15 Ultra
- Sync is turned off for your Google or Xiaomi account.
- Background activity is restricted for Contacts or Google services.
- Mobile data or Wi-Fi is unstable or limited for syncing.
- The wrong account is selected as the default for contacts.
- Temporary system glitches affecting sync services.
1. Make Sure Account Sync Is Enabled
Contacts can only update if sync is enabled for the account storing them. If sync is turned off, your phone will keep showing outdated contact information.
Open Settings, and then tap Passwords and security.
Tap Sync, and then select your Google or Xiaomi account.
Make sure Contacts sync is turned on.
2. Check Internet Connection Stability
Contact syncing requires a stable internet connection. Weak or restricted connectivity can stop updates from completing in the background.
Open Settings, and then tap Wi-Fi.
Connect to a stable network, and then switch to Mobile data if needed.
Wait a few seconds and allow the sync process to retry.
3. Set the Correct Default Contact Account
If your phone is saving contacts to the wrong account, syncing may appear broken. Selecting the correct default ensures new contacts sync properly.
Open Settings, and then tap Contacts.
Tap Default account, and then choose your Google or Xiaomi account.
Create a test contact to confirm syncing works.
4. Allow Background Activity for Contacts
MIUI and HyperOS aggressively limit background activity to save battery. If Contacts is restricted, syncing may stop without warning.
Open Settings, and then tap Apps.
Tap Manage apps, and then select Contacts.
Tap Battery saver, and then choose No restrictions.
5. Clear Contacts App Cache
Corrupted cache files can interfere with sync processes. Clearing the cache forces the app to reload fresh data.
Open Settings, and then tap Apps.
Tap Manage apps, and then select Contacts.
Tap Clear data, and then tap Clear cache.
6. Restart Your Phone
A restart refreshes system services and reconnects sync processes. This often resolves contact syncing issues caused by temporary glitches.
Swipe down from the top to open Control Center.
Tap the Power icon, and then tap Restart.
Wait for the phone to boot up and check your contacts again.
Most contact syncing problems on the Xiaomi 15 Ultra come down to sync permissions, background limits, or account settings. Once these are corrected, contacts usually update automatically without further action.
FAQs
Why do some contacts sync while others do not?
This usually happens when contacts are saved under different accounts. Only contacts saved to a synced account will update across devices.
Do Xiaomi contacts sync without a Google account?
Yes. Contacts can sync using a Xiaomi account, but you must enable sync and sign in for it to work properly.
How long does contact syncing usually take?
Syncing usually happens within seconds, but large contact lists or slow connections may take a few minutes to complete.
