How to remove duplicate contacts on Xiaomi Redmi 10: the complete guide

Duplicate contacts on Xiaomi Redmi 10 is a common problem that occurs after syncing with multiple accounts (Google, MIUI, SIM-Import backups or malfunctions in the Contacts app, and as a result, the phone book grows to hundreds of repetitive entries, and finding the right number becomes an agonizing experience. In this article, we will discuss all the working ways to remove duplicates from embedded tools. MIUI We will also help you to avoid them in the future.

Feature of Redmi 10 (model 2022, 2023, Redmi 10 Prime, etc., is that the system uses a combined contact database: data can be stored simultaneously in the device memory, on the device. SIM-It's a little bit more complicated to clean up, but we've detailed each method with the nuances of the firmware. MIUI 12/13/14. If you are faced with the error “failed to unite contacts” or after deleting duplicates appear again – the article has solutions for these cases.

Why are there duplicate contacts on Redmi 10?

Before you start cleaning, it is important to understand the root of the problem. On Xiaomi Redmi 10 duplicates arise for the following reasons:

🔄 Multiple syncs with one Google account (for example, after resetting settings or reinstalling firmware) and creates new records instead of updating old ones.
📱 Import of contacts with SIM-maps without checking. Many users copy numbers from SIM, without removing them from the phone memory.
☁️ Cloud Services Conflict: If You Use and MI Cloud, and Google Contacts, the system can duplicate records when synchronized.
📲 Errors of the “Contact” application in MIUI. In some versions of the firmware (for example, MIUI 12.5.7) duplicate bugs appeared after update.
🔄 Backups from third-party applications (such as Super Backup or Titanium Backup) that restore contacts on top of existing ones.

Interesting fact: on Redmi 10 with firmware MIUI 13+ Duplicates are more likely to appear when using two SIM-The system automatically creates separate records for each number associated with different operators, even if it is the same contact» MIUI, which can be turned off in the settings (we will talk about this below).

📊 How often do you encounter duplicate contacts?

It's always annoying!

Sometimes, after the synchronization

It used to be, it's not now.

Never encountered it.

Method 1: Remove duplicates through the standard Contacts app

The easiest method is to use the built-in merging tool in the Contacts app (an icon with a human silhouette on the home screen), which works on all versions of MIUI for Redmi 10, but has a limitation: it only combines full duplicates (entries with the same names and numbers). If contacts differ by at least one letter or number, they will have to be processed manually.

Step-by-step:

Open the Contacts app → press three points (⋮) top-right → Select Contact Management.
Tap on Combine and Fix → The system will automatically find duplicates and prompt them to combine.
Click Combine All (or select specific entries if you want to control the process).
Confirm action. The duplicates will be deleted and the data from them will be combined into one record.

⚠️ Note: If some contacts are missing after the merger, check the Archive folder in the same Contact Management menu. MIUI Misreports records instead of removing duplicates.

Backup your contacts (Settings → Google → Backup)

Check if sync with Google/Mi Cloud is disabled (during cleaning)

Make sure you're on SIM-There are no important numbers (they can be accidentally deleted)

Close all background applications that work with contacts (WhatsApp, Telegram, etc.)

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

If your contacts are synced with a Google Account, it is easier to clear duplicates through the web version of the service, which is suitable for Redmi 10 with any firmware, since it works at the cloud level.

How to remove duplicates:

Open contacts.google.com on your computer or phone and log in.
In the left menu, select Duplicates → the system will show all the repeated entries.
Click Combine All or select specific duplicates to merge.
After processing, update your contacts on Redmi 10: go to Settings → Accounts → Google → Sync and turn on / off the Contacts switch.

💡 Useful tip: If there are too many duplicates (over 500), Google Contacts may not be able to handle automatic merger. In this case, use the Duplicate Contacts Manager browser extension (available for Chrome). It allows you to configure duplicate search criteria (e.g., ignore register or gap differences).

Method	Advantages	Deficiencies	Time of processing
Standard "Contacts" appendix	It doesn't require the internet, simplicity.	It only combines full duplicates.	1-5 minutes
Google Contacts	Cleans all devices at once, flexible settings	You need access to a computer, not all duplicates are found.	5-15 minutes
Third-party applications (such as Simpler Merge)	Finds even partial duplicates, manual control	Risk of deleting important data requires permissions	10.30 minutes
Resetting contacts via MIUI	Remove all duplicates at once	Washes all contacts (requires a backup copy)	2-3 minutes

Method 3: Using third-party applications for deep cleaning

If the built-in tools fail, you will have to resort to third-party utilities. For Xiaomi Redmi 10, the following applications will suit (available on Google Play):

🔍 Simpler Merge is the simplest solution with an intuitive interface, allowing you to combine contacts into separate fields (for example, only by phone numbers, ignoring names).
🧹 Contacts Optimizer is an advanced tool with the function of finding “hidden” duplicates (for example, records with the same numbers, but different names).
📊 Duplicate Contacts – Analyzes contacts on multiple criteria and offers multiple merger options.

⚠️ Note: Before using third-party apps, be sure to turn off synchronization of contacts with Google and MI Cloud. Otherwise, duplicates may reappear after the next sync. Also check the permissions of the application: it should not request access to the app. SMS, Calls or location are a sign of potentially dangerous software.

Example of Simpler Merge:

Install the application and open it.
Click Scan Duplicate → wait for the analysis to be completed.
In the Recommendations section, select the entries for the merger (you can view the details of each contact).
Click Combine → Confirm the action.

What if the app does not find duplicates?

If the third-party utility does not detect duplicate contacts, try this: 1. Export contacts to the VCF file (via Settings → Import / Export) and check it manually on your computer. 2. Sort contacts by name in a standard application - sometimes duplicates are only visible in alphabetical order. 3. Check hidden contacts: MIUI has a folder called Other Contacts, where undisplayable records can be stored (open Contacts → Three Points → Settings → Display all contacts).

Method 4: Reset contacts via MIUI settings (radical method)

If there are too many duplicates and other methods do not help, you can completely reset the contact database and restore it from the backup, which is suitable for Redmi 10 with any version of MIUI, but requires preliminary preparation.

Step-by-step:

Create a backup of contacts: Open Contacts → Three Points → Contact Management → Import/Export. Select Export to File → Save.vcf to a memory card or cloud.
Reset contacts: Go to Settings → Applications → Application Management. Find Contacts → Storage → Clear data. Confirm action. All contacts will be deleted from the device (but will remain in Google/Mi Cloud if sync was enabled).

Get back in touch. → Contact management → Imports/exports.
Select Import from your device and specify the previously saved.vcf file.
🖥️ Through Google Contacts: Go to contacts.google.com. Enable List Mode (icon) ☰ Sort the contacts by name or number. → Find duplicates and remove them one by one.

💡 Tip: To speed up the process, use snippet search. For example, type the first 3 digits of a frequently recurring number into the search bar, and the system will show all contacts with this snippet.

If you accidentally delete a contact you want, you can restore it within 30 days through Google Contacts (Basket section). On Redmi 10, locally remote contacts cannot be restored - they disappear forever.

How to Prevent Duplicate Duplicates in the Future

To avoid recurring problems, follow these guidelines:

🔄 Turn off automatic sync with unnecessary accounts, for example, if you are not using MI Cloud, remove it from Settings → Accounts.
📱 Do not import contacts with SIM-If you already have a card on your phone, you'd better manually add the missing numbers.
☁️ Use one primary account to sync (e.g., Google only or only Google only) MI Dual synchronization is the main reason for duplicates.
🔄 Check your contacts regularly for duplicates (every 2-3 months). MIUI Automatically search for repeating records (Settings) → Additionally. → Optimization of contacts).
📲 Update the firmware. In new versions. MIUI (Since 13.0.5) improved contact processing and duplicate bugs are less common.

⚠️ Attention: SIM-The contacts are stored without names, only numbers!

Which application is best for removing duplicates?

For Redmi 10, the best options are Simpler Merge if you want to quickly combine duplicates with minimal settings; Contacts Optimizer if you need deep cleaning with partial match analysis; Google Contacts if you sync with Google and want to clear all devices at once. Third-party apps are worth using only if the built-in MIUI tools failed.

What if the duplicates are left after all the manipulations?

If none of the methods worked, the problem could be in the damaged contact database. In this case: Back up contacts to.vcf. Reset your phone to factory settings (Settings → About Phone → Reset). After rebooting, import contacts back from the.vcf file. This is a radical method, but it is guaranteed to remove all duplicates.