How to delete duplicate contacts on Xiaomi without losing data

Duplicate contacts on Xiaomi smartphones are a common problem that occurs after synchronization with multiple accounts (Google, Mi Account, SIM-Imports from backups or errors in the Contacts app, resulting in a phone book that grows to hundreds of repetitive entries, and finding the right number becomes an agonizing experience. In this article, we will discuss 5 working ways to clean up duplicates — from built-in tools. MIUI We will also provide you with a guide to how to prevent them from appearing in the future.

It’s important to understand that deleting duplicates is not just a cosmetic procedure. A clogged phone book slows down the Contacts app, increases cloud sync time, and can cause crashes when calling (for example, when one number is displayed under different names). In addition, duplicates take up space in backups, making them difficult to recover. We tested all methods on Xiaomi 13 Pro, Redmi Note 12 and POCO X5 Pro models – instructions are relevant to MIUI 14 and later.

Why do you have duplicate contacts on Xiaomi?

The main reason for the duplication is multi-channel synchronization. Xiaomi smartphones by default pull up contacts from:

• 📱 Local phone memory (hand-saved);
• ☁️ Google Account (if sync is enabled in Settings) → Accounts);
• 🔄 Mi Account (Xiaomi Cloud);
• 📶 SIM-Cards (when importing or automatically copying);
• 📱 Other applications (WhatsApp, Telegram, Viber when exporting chats).

When the same contact is stored in multiple sources (e.g., Google and Google) SIM-map, system MIUI Another common scenario is import/export errors, such as transferring contacts from an iPhone via vCard or restoring them from a Mi Cloud backup, which can create copies with minor differences (extra name space, different number format).

Also, the doubles appear at:

• 🔄 Updates MIUI (Sometimes the synchronization settings are reset);
• 📲 The use of two SIM-match-contact;
• 🤖 Contacts app malfunctions (for example, after a forced stop).

⚠️ Note: If you notice that duplicates appear regularly (for example, after each update) MIUI), Check the synchronization settings in Settings → Accounts. → Google/Mi Account: Automatic backup of contacts from multiple sources may be enabled.

Method 1: Integrated contact association in MIUI

The easiest method is to use the built-in merger function in the Contacts app, which is available on all Xiaomi smartphones and does not require any additional software installation.

1. Open the Contacts app (a icon with a person's silhouette).
2. Press three points (⋮) in the upper right corner and select Contact Management.
3. Put it on the Connect Contacts.
4. The system will automatically find possible duplicates. Opposite each will be a "Connect - press it to confirm."
5. For a mass merger, use the option to Choose All (if available).

Limitations of the method:

• 🚫 It does not always recognize duplicates with minor differences (for example, "+7 999 123-45-67" and "8 999 1234567").
• 🔄 It does not delete records, but only combines them into one (the source data remains in the system).
• 📱 It only works for contacts stored in your phone or Mi Account memory.

Backup your contacts (Settings → System → Backup)

Check that all important numbers are stored in one source (e.g., only in Google)

Turn off sync with SIM-map (Settings) → SIM-map → Import/export of contacts)

Close all background applications that work with contacts (WhatsApp, Telegram)-->

If the built-in tool failed, move on to the next method, and note that once combined, it may be necessary to reboot the phone to make changes appear in other apps (such as WhatsApp).

Method 2: Clean up Google Contacts (for synchronized accounts)

If your contacts are synced with Google, it is easier to clear duplicates through the web version of the service.

• 🔍 More accurate to find repeating entries (Google algorithm is more powerful than in the Google algorithm) MIUI);
• 📱 Remove duplicates from all devices at the same time;
• 🔄 Recover mistakenly deleted contacts within 30 days.

Instructions:

1. Go to contacts.google.com and log in with the same account as you do on your phone.
2. In the left menu, select Doubles (Current and Manage section).
3. The system will show all the replays found. Click Combine all or select specific pairs to merge.
4. After processing, press Ready and wait for sync with your phone (can take up to 10 minutes).

Important: Before mass unification, check that Google has correctly identified duplicates. Sometimes the system mistakenly suggests that different people with similar numbers (for example, +7 999 123-45-67 and +7 999 123-45-68) be merged. Manually monitor at least 10-15 pairs to avoid data loss.

I only sync with Google.

Using Mi Account.

I keep it locally on my phone.

Exporting to SIM-map

I'm not following this.-->

Method 3: Contact cleaning applications (for complex cases)

If the built-in tools didn’t work out, third-party software will help. We tested 3 apps that effectively remove duplicates on Xiaomi:

1. Contacts Optimizer (free, no ads) Link: Google Play Pros: finds duplicates by numbers, email and addresses; supports backup. Cons: no Russian language.
2. Simpler Merge Duplicates (free, with purchases) Link: Google Play Pros: intuitive interface, work with Google Contacts and local records. Cons: limit on the number of associations in the free version.
3. Cleanup: Duplicate Contacts (free) Link: Google Play Pros: analysis by 10+ criteria (name, number, notes, etc.). Cons: requires registration for full functionality.

Algorithm of work (for example, Contacts Optimizer):

1. Install and open the application.
2. Press Scan for Duplicates (scanning will take 10–30 seconds).
3. Look through the list of duplicates found, and the app will show you what criteria the records match (number, name, email).
4. Select Merge Selected for Merger or Delete for Deletion.
5. After cleaning, export backup contacts.

⚠️ Note: Some applications (e.g. Cleanup) request access to SMS and Call Log. waive these permissions - they are not needed to work with contacts and can be used to collect data.

💡

Before using third-party apps, disable autosynchronization of contacts in Settings → Accounts → Google/Mi Account. This will prevent the creation of new duplicates during the cleanup.

Method 4: Manual cleaning through export/import (for power users)

This method is suitable if the duplicates appeared after importing from the SIM-The idea is to export the contacts to a file, clean it manually (e.g., in Excel), and then import them back:

1. Export of contacts: Open contacts → ⋮ → Contact management → Imports/exports → Export to file. Select the.vcf (vCard) format and save the file to your phone's memory.
2. File Editing: Connect your phone to your PC and copy the.vcf file. Open it in a text editor (like Notepad++) or convert it to.csv via Google Contacts (import → export to CSV). Delete repeating strings manually or using Excel formulas (e.g., = IF (A:A;A2)>1; "Double");
3. Import back: Return to Contacts → Import/Export → Import from file and select edited.vcf.

Critical: delete all existing contacts on your phone before importing, otherwise the duplicates will reappear. To do this, go to Settings → Apps → Contacts → Memory and click Clear Data (this will only delete local entries without affecting Google or Mi Account).

Advantages of the method:

• 🎯 100% control over the process (you manually choose what to delete);
• 📊 Possibility of mass processing through Excel;
• 🔄 Suitable for contact with SIM-Maps or outdated backups.

Disadvantages:

• ⏳ It takes a lot of time with lots of contacts;
• 📴 Requires skills to work with Excel or text editors;
• 🚫 Risk of losing data when editing the file incorrectly.

Method 5: Reset the Contacts app (last resort)

If none of the methods worked and the duplicates keep appearing, the problem may be in the cache or the Contacts app data.

1. Go to Settings → Applications → Application Management.
2. Find Contacts (or Contacts) and tap on it.
3. Choose Memory and Cache.
4. Click Clear the cache, then Clear the data.
5. Reboot the phone.

After discharge:

• 🔄 Contacts from Google or Mi Account will be automatically restored when synced;
• 📱 Local contacts (save only on your phone) will be deleted – make sure they are backed up;
• 📶 Contacts with SIM-The cards will remain intact.

⚠️ Note: On some Xiaomi models (e.g. Redmi Note 10 Pro), resetting the Contacts app data may result in loss of call history. If it is important, pre-export it through the Call Recorder app or Settings → Annexes → Phone. → Call history.

If you reset the doubles again, the problem is sync with the cloud.

1. Disable autosynchronization in Settings → Accounts → Google/Mi Account.
2. Remove all contacts from the cloud via the web version (Google or Mi Cloud).
3. Manually import a clean version of contacts (e.g., from a backup).

How to Prevent the appearance of doubles in the future

To avoid recurring problems, follow these rules:

• 🔄 Select one sync source (e.g., only Google or only Mi Account). Disable the others in Settings → Accounts.
• 📱 Do not import contacts with SIM-It is better to manually add the necessary numbers to the main account.
• ☁️ Regularly check the cloud for doubles (every 2-3 months).
• 🔄 Turn off auto-reservation in Settings → System system → Backup if it creates copies of contacts.
• 📲 Use one contact management app (e.g. standard Contacts only or Google Contacts only).

Also useful:

• 📌 Backups before any manipulation of contacts (via Settings) → System system → Backup or Google Drive Backup).
• 🔍 Check the format of numbers when you add them manually. Avoid options like +7 (999) 123-45-67 and 89991234567 single-contact.
• 📵 Do not use contact cloning apps (e.g. Dual Apps in the app). MIUI), If you are not sure about the synchronization settings.

💡

The most common reason for re-appearance of duplicates is simultaneous sync with Google and Mi Account. Select one primary account and disable the others.

FAQ: Frequent questions about the duplicate contacts on Xiaomi