If you notice that your Xiaomi phone’s call history has stopped syncing between devices or with the Mi Cloud, the problem may be that your sync reactivation function is disabled, which automatically restores the connection between your account and call data after crashes, system updates or a device change. Without proper configuration, you risk losing important information about incoming and outgoing calls, as well as losing the ability to back them up.
In this article, we will discuss what call sync reactivation is, why it can turn off, and how to set it up correctly on different Xiaomi, Redmi, and POCO models. We will focus on the typical user errors that lead to crashes, and we will give a checklist for quick troubleshooting. If you encounter calls that are not displayed in the cloud or are not transferred to a new device, here you will find a solution.
What is call synchronization reactivation and why is it needed?
Call Sync Reactivation is an automatic process to restore communication between your Xiaomi smartphone and Mi Cloud servers after sync interruption.
- 🔄 Update MIUI — After installing the new firmware version, some settings are reset.
- 📱 Change of device – when you first connect a new smartphone to your Mi Account.
- 🔌 Long-term disconnection from the network – if the phone was offline for more than 30 days.
- ⚠️ Manual sync shutdown – the user could deactivate the function in the settings.
Without reactivation, your call history won’t be updated in the cloud, and when you change your phone, you won’t be able to migrate data. For example, if you used the Xiaomi Mi 11 and then switched to the Redmi Note 12 Pro+, without proper synchronization, all call records will remain on your old device.
⚠️ Note: If the reactivation does not work automatically, this may indicate a Mi Account problem or a lock on sync at the server level of Xiaomi.
It's important to understand that call synchronization is different from contact backup, the first being responsible for call history (incoming, outgoing, missed), and the second being responsible for saving phone numbers, both of which can work independently.
The reasons for failures of call synchronization in Xiaomi
If the reactivation doesn't occur or the synchronization doesn't work properly, there may be both software and hardware factors to blame.
| Type of problem | Reason. | How it manifests |
|---|---|---|
| Network errors | Unstable Internet connection or Mi Cloud traffic blocking | Synchronization is suspended at the stage "Connection..." |
| Account errors | Unconfirmed Mi Account or Two-Level Authentication | A notification of "authentication error" appears |
| Conflict of applications | Third-party programs to block calls or optimize | Call history is not fully displayed or delayed |
| MIUI failures | Damaged system files after update | The synchronization function is not in the settings menu |
Most often, users experience a problem after upgrading MIUI to version 14+, where Xiaomi has tightened its security policy. For example, if you use an informal firmware or a rooted device, sync may be blocked by servers.
Another common scenario is a conflict with a Google account: if the phone is syncing through Mi Cloud and Google Contacts at the same time, the call history may be duplicated or lost.
How to check if call synchronization is enabled
Before you start reactivating, make sure that the synchronization function is activated at all.
- Open the Settings app on your Xiaomi.
- Go to Accounts and Synchronization → Mi Account.
- Click on your profile and select Data Sync.
- Check if the switch is on opposite the Log of calls.
If the switch is grey and cannot be activated, it may mean:
- 🔴 No Internet connection – connect to Wi-Fi or mobile network.
- 🔴 Unconfirmed account – check the email linked to Mi Account.
- 🔴 Region restrictions – Mi Cloud is limited in some countries.
On POCO models, the path may be slightly different: Settings → Memory and Sync → Mi Cloud → Synchronization. If you don’t find the right item, try searching by settings (the magnifying glass icon in the upper right corner).
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If sync is enabled but calls are not updated, try manually starting the process: open the Call Log, pull the screen down for updates, and wait for the Sync Complete notification.
Step-by-step instructions for synchronization reactivation
If call synchronization has been disabled or is not working properly, follow the following steps to restore it:
Check your internet connection (Wi-Fi or mobile data)
Update the Call Log app on Google Play
Make sure the latest version of MIUI is installed on the device.
Sign in to Mi Account and confirm your personal details
Enable synchronization in account settings
Reboot your smartphone-->
Let’s look at each stage in more detail:
- Software Update: An outdated version of MIUI may contain sync errors. Go to Settings → About Phone → System Update and install the latest patches.
- Resetting sync settings: If the function is on but not working, try turning it off and activating it again. To do this: Settings → Accounts and Sync → Mi Account → Data Sync → Call log (turn off/on)
- Cache cleanup: Go to Settings → Applications → Application Management → Call log → Storage → Clear cache. This will help reset temporary data that may interfere with synchronization.
- Permissions Check: Make sure the Call Log app has access to contacts and call history. Go to Settings → Apps → Permissions → Call Log and enable all necessary rights.
If synchronization is not working after these actions, try forced synchronization via Mi Cloud in the browser:
- Open i.mi.com and log in to your account.
- Go to the Call Journal section.
- Press the Sync button (if it is active).
What to do if the sync button is inactive?
Common Mistakes and How to Avoid Them
Many users make common mistakes when setting up syncs, which leads to repeated failures.
- 🚫 Use it. VPN Synchronization – this can block access to Mi Cloud servers due to region change.
- 🚫 Turn off background activity for the Call Log application in the battery settings.
- 🚫 Delete application data without prior backup – this will lead to the loss of call history.
- 🚫 Ignore sync error notifications – they often contain clues to fix the problem.
Another common mistake is using multiple Mi Accounts on one device, and if you've previously logged in to another profile, your call history can be stored in that profile instead of your current one, to check that out:
- Open Settings → Accounts and Synchronization.
- Delete all of your Mi Accounts, leaving only the main one.
- Reboot your phone and check the sync again.
On global firmware devices (such as Xiaomi 13T Pro Global), call synchronization can be disabled by default due to GDPR limitations. In this case, it must be enabled manually after the first setup of the phone.
⚠️ Note: If you are using custom restoration (e.g, TWRP) Or unofficial firmware, sync with Mi Cloud can be completely blocked, in which case the only way out is to go back to stock. MIUI.
Transferring Call History to a New Xiaomi Device
When buying a new Xiaomi smartphone, many users are faced with the fact that the call history is not automatically transferred. To avoid data loss, follow this algorithm:
- Backup on your old device: Go to Settings → Accounts and Sync → Mi Account → Backup and create a new copy by turning on the Call Log item.
- Sign in to your account on your new phone: When you first enable a new Xiaomi, sign in to the same Mi Account that was used on your previous device.
- Data recovery: During the setup process, the system will prompt you to restore data from the backup. Choose the latest copy and make sure that the Log of Calls item is marked.
- Sync Check: After recovery, open the Call Log and make sure all records are in place. If any calls are missing, try manually syncing data through Mi Cloud.
If you missed the recovery phase when you first set up, don't worry. You can do it later:
- Open Settings → Accounts and Sync → Mi Account → Backup.
- Select the desired copy and click Restore.
- Confirm the restoration of the call history.
Some models (such as the Redmi K50 Ultra) may require additional confirmation via SMS or email to restore backup, a security measure to prevent unauthorized data access.
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If you are selling or transferring your old Xiaomi to another person, be sure to log out of the Mi Account and reset to factory settings, otherwise the new owner will be able to access your call history through the cloud.
Alternative ways to back up calls
If sync via Mi Cloud is not available for some reason, you can use alternative methods to save your call history:
- 📱 Export to file: Apps like Call Logs Backup & Restore (available on Google Play) let you save your.xml or.csv history to a memory card or Google Drive cloud.
- ☁️ Sync through Google: In the settings of the Google account, you can enable backup call history (path: Settings) → Google → However, this method does not work on all Xiaomi models.
- 💻 Manual transfer via PC: with the help of the program Mi PC Suite (official software from Xiaomi) can back up all data, including the call log, and then restore it to the new device.
When using third-party backup applications, pay attention to:
- 🔒 Data security – choose programs with good reviews and privacy policies.
- 📅 Backup regularity – set up automatic export, for example, once a week.
- 📎 File format – make sure you can import data back to Xiaomi.
For example, the Super Backup & Restore app supports saving your Dropbox or OneDrive cloud call history, which can be helpful if you don’t trust Mi Cloud.