How to permanently delete phone numbers from Xiaomi Android smartphone: from contacts to cache

Deleting phone numbers from Xiaomi devices only seems to be a simple task at first glance. Even after a standard cleanup through the Contacts app, data can remain in hidden memory areas, Mi Cloud backups or synchronization cache. A particularly pressing problem for users who sell or transfer a smartphone to another person is that residual contact metadata can be recovered using specialized software even after resetting to factory settings.

In this article, we will discuss 5 ways to completely remove, from manual cleaning through system settings to using ADB engineering commands and formatting internal memory. We will focus on the nuances of working with Redmi Note 12, POCO X5 and Mi 11 models, where synchronization algorithms differ from standard ones. If you plan to get rid of the device or just want to guarantee to erase personal data, follow the instructions below.

Why Standard Contact Removal Doesn't Work

When you delete a number through the Contacts app (Settings → Apps → Contacts → Storage → Clear Data), the smartphone erases only the visible part of the database.

• 📁 Local database SQLite - files contacts2.db and contacts.db-wal in the folder /data/data/com.android.providers.contacts/databases/. They are restored by re-synchronization.
• ☁️ Cloud Mi Account – Even if you turn off sync, backups can be stored for up to 30 days.
• 📱 Google Services Cache – If you’ve ever logged in to a Google account, your contacts could be duplicated in Google Contacts.
• 🔌 SIM-card – many users forget that the numbers are saved on the physical media.

Xiaomi also uses its own Mi Backup backup system, which automatically creates contact archives when connected to Wi-Fi. These archives are stored in the /MIUI/backup/AllBackup/ folder and are not deleted during a standard cleanup.

⚠️ Note: If you sell a smartphone, it is not enough to simply reset your settings through Settings → The phone. → Resetting: Phone numbers can be restored from uncleaned partitions /data and /cache Using tools like Dr.Fone or Oxygen Forensic.

Method 1: Complete removal via Xiaomi settings (without root)

This method is suitable for users who don’t want to resort to radical measures like resetting, and removes contacts from all synchronized sources, including Mi Account and Google.

1. Open Settings → Accounts and Synchronization.
2. Select Mi Account (or Google if you use it for sync).
3. Click on Contact Sync and turn it off.
4. Go back to Settings → Applications → Application Management.
5. Find the Contacts app (com.android.contacts) and select Warehouse → Clear the data.
6. Confirm the deletion and restart the device.

After the reboot, check that the contacts have disappeared from:

• 📞 Applications "Phone" (Install "Contacts»).
• ☁️ Mi Cloud (check through your browser at i.mi.com).
• 🔍 Xiaomi Search String (Swipe Down on the Home Screen) → enter the contact name).

⚠️ Note: If you used dual apps (the Dual Apps feature in Xiaomi), contacts could be duplicated in cloned versions of messengers. → Additionally. → Duplicate applications.

Method 2: Cleaning through ADB (for power users)

If you want to erase all contact traces, including system files, use Android Debug Bridge (ADB).This method requires connecting your smartphone to your computer and enabling USB Debugging.

Warning: Incorrect ADB commands may damage the system.

1. Turn on Developer Mode on Xiaomi: go to Settings → About Phone and 7 times click on the MIUI version.

These teams:

• 🧹 Clearing application data Contacts and Contact Warehouse.
• 🗑️ Delete database files contacts2.db and related journals.
• 🔄 Resetting the synchronization cache.

Method 3: Formatting Internal Memory (Radical Clean)

If you're ready to completely reset your device, use internal memory formatting, which deletes all data, including contacts, messages, photos and apps, and is suitable before selling a smartphone.

Note: After this procedure, it will be impossible to recover the data!

1. Create a backup of important files (photos, documents) on a PC or external drive.
2. Go to Settings → About Phone → Resetting → Delete all data.
3. Select Format Internal Memory (the option may be called Clear Everything on some models).
4. Enter the password from Mi Account (if tied) and confirm the action.
5. Wait for the process to be completed (it will take 5-15 minutes).

After formatting:

• 🔄 The smartphone will reboot to the state "as out of the box".
• 📱 All accounts (Mi Account, Google) will be detached.
• 🗃️ folder /MIUI/backup/ and the app cache will be cleared.

💡

If after reset, the smartphone asks you to enter the old password from Mi Account, and you do not remember it, use the official unlock tool here.

Method 4: Removal of contacts with SIM-map

Many users forget that phone numbers can be stored not only in the memory of the smartphone, but also on the phone. SIM-This data is not deleted when resetting and can be restored when the card is transferred to another device.

To cleanse. SIM-map:

1. Open the Contacts app.
2. Press three points (⋮) in the upper right corner and select Contact Management.
3. Go to the tab. SIM-map (or Map) 1/2, If you use Dual, you can use Dual. SIM).
4. Click Delete All or select numbers manually and delete them.

If the option is not available:

• 🔧 Try inserting. SIM-The card to another smartphone and clear it from there.
• 📱 On some Xiaomi models (e.g. Redmi) 9A) contact-management SIM available through Settings → SIM-maps and mobile networks → Contacts SIM.

⚠️ Note: If you are using eSIM (virtual) SIM-the card, contacts can be stored in the operator profile, they can be cleared only through the mobile operator application (for example, MTS Connect, Beeline).

Method 5: Remove backups in Mi Cloud

Even after cleaning the smartphone, the contacts can remain in Xiaomi’s cloud storage to remove them from there:

1. Go to i.mi.com and log in.
2. Select the Contacts section.
3. Push the gear. ⚙️ in the upper right corner and select Contact Management.
4. Mark all contacts (check at the top) and click Delete.
5. Confirm the action.

Please check further:

• 📂 Backups: Go to Settings → Mi Cloud → Backup the device and delete all archives.
• 🔄 Sync logs: in the same Mi Cloud section, turn off automatic contact sync.

If you are selling a smartphone, it is also recommended to untie it from the Mi Account:

1. Go to Settings → Accounts and Sync → Mi Account.
2. Press three points (⋮) and choose Exit.
3. Confirm the deletion of the account from the device.

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Even after removing contacts from Mi Cloud, they can remain in the cache of Xiaomi applications for up to 72 hours. ADB.

What to do if contacts are restored after removal

If the phone numbers are back, the reasons may be:

If the problem is repeated:

1. Check if the smartphone is connected to the corporate MDM-Profile (device management through work/study) profiles can retrieve contacts from corporate systems.
2. Use the Files by Google app to search for the remaining contact files by keywords: contacts.db, vcard,.vcf.
3. If nothing helps, do a full reset via Fastboot (instruction below).

FAQ: Frequent questions