Contacts are duplicated on Xiaomi: why it happens and how to fix it

You open a phone book on your Xiaomi to find the number you want, but instead of one contact, you see two, three, or even five of the same entries? The problem of duplicate contacts is familiar to many owners of smartphones of this brand — especially after updating MIUI, changing your account or syncing with cloud services. In this article, we will not just list the standard tips like “clean the cache”, but will analyze the deep causes of the occurrence of duplicates, including the features of MIUI with multiple accounts, and offer step-by-step solutions that work even in advanced cases.

It’s important to understand that duplicate contacts are not a bug, but a consequence of the Android architecture and Xiaomi’s data management policy. For example, every time you sync with a Google Account, Mi Account, or third-party messengers (like WhatsApp or Viber), the system can create new entries instead of updating existing ones. SIM-And if you're using a map or transferring contacts from another phone, you're at a much higher risk of duplication. Next, we're going to look at how it works from the inside out -- and what to do about it.

Why Contacts Are Duplicated on Xiaomi: 7 Reasons

Duplicate contacts rarely occur for one reason, usually a combination of several factors related to synchronization settings, MIUI features, and user actions.

• 🔄 Multiple accounts: Simultaneous sync with Google Account, Mi Account and social networks (e.g. Facebook or Facebook) VK). Each service can create copies of its contacts.
• 📱 Transferring data from another phone: When migrating via Mi Mover, Google Drive or Smart Switch (for former Samsung users), contact ID conflicts often arise.
• 📶 Two. SIM-map: MIUI You can keep contact separate for each SIM, This is especially true for Redmi Note models and POCO Dual-enabled SIM.
• 🔄 Update MIUI: After major updates (for example, with the MIUI 12 on MIUI 14) the system sometimes "loses" the connections between the contacts and creates new records.
• ☁️ Cloud services conflicts: If you’ve ever used iCloud (for former iPhone owners) or Yandex.Mail, synchronizing them can leave “junk” duplicates.
• 🤖 Errors of the Contacts app: In some versions MIUI (for example, MIUI 13.0.4) was a bug that caused the app to duplicate records every time it opened.
• 📲 Third-party messengers: WhatsApp, Telegram and Viber can create their own local copies of contacts that are not synchronized with the main phone book.

Especially insidious is when the duplicates don't appear immediately, but after a few days or weeks, for example, after the first sync with Google, everything may look fine, but after a week you find copies, which is because MIUI uses delayed sync to save battery — and sometimes this mechanism works wrong.

How to check where the doubles come from: diagnosing the problem

Before you remove the duplicates, you need to understand the source of the duplicates, which will help you choose the right way to clean them and avoid the problem recurring.

1. Open the Contacts app on your Xiaomi.
2. Press three points (⋮) in the upper right corner and select Contact Management → Imports/Exports → Management of duplicates.
3. Look at how many takes you find. If there are more than 50, it's a systemic problem (e.g., account conflict) If there are less than 10, it's probably because of data transfer or manual addition.
4. Go to Settings → Accounts and sync and check which services have access to contacts. Pay attention to the “Sync Contacts” box.

It’s also useful to look at Settings → Applications → Application Management → Contacts → Memory. If the data volume is more than 50 MB, this is a sign of a large number of duplicates or junk records. For comparison, a clean phone book with 500 contacts takes up no more than 2-3 MB.

Critical detail: if you see contacts with prefixes like "WhatsApp:", "Viber:" or "Telegram:" in the take list, it means that the messengers have created their own local copies. They can not be deleted through standard double management - you will need a separate cleaning (more on this below).

Method 1: Built-in Duty Management in MIUI

The easiest method is to use the built-in MIUI tool to merge takes, which works in most cases, but has limitations:

• ✅ Suitable for duplicates created by a single account (e.g., Google only).
• ❌ Does not remove duplicates from messengers (WhatsApp, Viber).
• ❌ You may not be able to do it if you have more than 200 doubles.

Instructions:

1. Open the Contacts app.
2. Tap it on three points (⋮) → Contact management → Imports/Exports → Management of duplicates.
3. Click Leak next to each take or select Leak All (if you are sure the merger is correct).
4. Confirm the action. The system will combine the records, leaving the fullest version.

If the Takes Management button is missing, update the Contacts app via Google Play or check the MIUI version (older versions, such as MIUI 11, may not have had this tool).

Make a backup of contacts via Import/Export → Export to file

Make sure you have enough battery power (the process can take 5-10 minutes)

Turn off mobile internet if you are using a slow network (to avoid interruption)

Close all background apps, especially instant messengers-->

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

If your contacts are synced with your Google Account, the most reliable way to remove duplicates is to use the web version of Google Contacts, which works even for older Xiaomi models (such as the Redmi 4X or Mi A1), where built-in MIUI tools are limited.

Step-by-step:

1. Open contacts.google.com on your computer or phone and log in with the same account as you do on Xiaomi.
2. On the left menu, select Doubles. The system automatically finds all the repeated entries.
3. Click Push for each take or use the option to Push All (if there are many takes).
4. Once cleaned, go back to your phone and manually update your contacts: go to Settings → Accounts and Sync → Google → Sync Contacts.

Important: If you use multiple Google Accounts, repeat the procedure for each, and check the Other Contacts folder in Google Contacts, which may contain duplicates that do not appear in the main list.

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If you still have duplicates on your phone after you merge in Google Contacts, try turning off contact sync for Mi Account. Go to Settings → Accounts and Sync → Mi Account and uncheck the “Contacts” box.

Method 3: Manually remove duplicates via Excel (for power users)

If you have hundreds or thousands of takes and the built-in tools don't work, you can export contacts to a.vcf or.csv file, clean it up in Excel or Google Sheets, and then import it back, which is a method that requires precision, but gives you 100% control over the process.

Instructions:

1. Export contacts: Contacts → Contact management → Import/Export → Export to file. Select.vcf (to import back to phone) or.csv (to edit in Excel).
2. Open the file in Excel or Google Sheets. Contacts will be broken down into columns: Name, Phone, Email, etc.
3. Sort the data by column Phone and manually delete duplicate lines. To speed up, you can use the function Remove duplicates in Excel (Data → Remove duplicates).
4. Save the file and import it back: Contacts → Contact Management → Import / Export → Import from the file.

The advantage of this method is that you can not only delete duplicates, but also unify the formats of numbers (for example, replace all 8 with +7), fix typos in names or add missing data.

Method 4: Reset the Contacts app (if nothing helps)

If the duplicates appear over and over again despite all the cleanup attempts, the problem may be in the Contacts app itself, in which case resetting it to factory settings will help, not delete the contacts themselves (if they are synchronized with the cloud), but reset all local settings and cache.

How to reset:

1. Go to Settings → Applications → Application Management.
2. Find the Contacts (or Contacts) app and tap on it.
3. Select Warehouse → Clear cache and Clear data.
4. Reboot the phone. Once turned on, the contacts are synced back from the cloud (if sync is enabled).

⚠️ Note: If you haven't synced your contacts with Google or Mi Account, resetting the Contacts app data will delete them permanently.Be sure to export the backup via Import/Export before the procedure.

After reset, check to see if the duplicates have reappeared. If so, the problem lies deeper - perhaps in the conflict between MIUI and the Android version.

Method 5: Extreme measures – resetting the phone to factory settings

If all previous methods have failed, the last option is hard reset, which is a radical solution, but it is guaranteed to remove all duplicates, as the phone will return to the "out of the box" state.

Create a backup of contacts in.vcf or.csv format

Save photos and videos to your computer or cloud

Take a picture or record your Wi-Fi, Bluetooth and other device settings

Make sure you know the username and password from Mi Account (after reset, you will need authorization)

Untie your phone from your Google Account (if you have factory protection enabled) FRP)-->

Resetting instructions:

1. Go to Settings → About Phone → Resetting → Delete all data.
2. Enter the phone password (if installed).
3. Confirm the reset. The phone will restart and start the cleaning process (may take 5-15 minutes).
4. Once turned on, perform the initial setup, but do not restore the data from the backup (this can return duplicates). Instead: Connect Google Account and wait for the contacts to sync. Check if there are any duplicates. If everything is clean, manually import the rest of the data (photos, messages, etc.).

⚠️ Note: If after resetting you restore the data from the backup MIUI (You can get back in the Mi Cloud, 90 percent chance of getting back in duplicates, and you can only use selective recovery, like just Google contacts or just photos.

This is the last chance to get rid of duplicates if they are due to deep errors in the MIUI database. However, remember: resetting a phone is not only about removing contacts, but also all settings, applications and files. Use it only as a last resort.

How to Prevent Doubles in the Future: 5 Rules

Delete the take is half the battle, and it's much more important to set up the phone so that it doesn't come back.

• 🔧 Select one primary account to sync: If you use both Google and Mi Account, disable the sync of contacts for one of them. The best option is to leave only Google Contacts, as they are better integrated with other services.
• 📵 Turn off instant messenger contact sync: In WhatsApp, Viber, and Telegram settings, find the "Contact Sync" option and deactivate it. These apps create local copies that are often duplicated.
• 🔄 Check duplicates regularly: Open Double Management in Contacts once a month and leak new copies if they appear.
• 📱 Use one number format: Unify all phone numbers (e.g., only +7XXXXXX instead 8XXX or +7 (XXX) XXX-XX-XX). This will reduce the risk of recognizing one number as different records.
• ☁️ Stop syncing with social media: Facebook, VK And Instagram often creates duplicates when you update your contacts, so you'd better manually add the numbers you want from social media to your main phone book.

It’s also useful to install a third-party contact management app, such as Contacts+ or Simpler Contacts, which offer more flexible tools to merge duplicates and prevent them from appearing, but check reviews before using them – some apps can create synchronization problems themselves.

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The most common reason for duplicates to reappear is simultaneous sync with Google and Mi Account. Select one primary service and disable contact sync for the second.

FAQ: Frequent questions about the duplicate contacts on Xiaomi