Why Xiaomi doesn’t save phone number: full story

Did you add a new contact to Xiaomi's phone book, but it disappeared after a minute? Or did you reboot your smartphone to forget all the numbers you saved? This problem is familiar to many owners of MIUI devices, from the budget Redmi Note 10 to the flagship Xiaomi 13 Ultra. 80% of the time it's not hardware malfunctions, but software conflicts or incorrect settings.

In this article, we’ll break down 10 real reasons why Xiaomi doesn’t save phone numbers, from a banal sync error with Google Account to hidden firmware bugs. You will receive step-by-step instructions for each situation, including the rare cases when the problem lies in the corruption of system files. MIUI 14 and newer, where the algorithms of working with contacts have changed.

Before you rush to reset, check if the numbers are only saved in a particular application (like the standard Contacts or Truecaller), or is the problem global? 10 before 2-3.

1. Sync conflict with Google Account

The most common reason is the simultaneous synchronization of contacts with Google and Mi Account, which MIUI can get confused about priorities and erase numbers stored in local memory if they are duplicated in the cloud, especially after:

• 🔄 Firmware updates (e.g. with MIUI 13 on MIUI 14)
• 📱 Shifts SIM-card-carrier
• ☁️ Log in to a new Google account on your device

How to check:

1. Open Settings → Accounts and Synchronization.
2. Select your Google Account and turn off contact sync.
3. Save the test number manually and restart the phone.

If the number is still there, the culprit is found.

⚠️ Warning: Never enable contact sync at the same time as Google and Mi Account.This leads to version conflict and data loss!

2. Damage to the contact database

If the numbers are only lost in the standard Contacts app, but remain in WhatsApp or Telegram, the database contacts2.db is to blame.

• 🛠️ Incorrect completion of work (forced reboot)
• 📉 Sudden power outage with low battery charge
• 🦠 Viral attacks (rare but possible)

How to fix it:

For advanced users, there is a radical method to delete the database file manually (requires Root or ADB):

adb shell


su




rm /data/data/com.android.providers.contacts/databases/contacts2.db




reboot

⚠️ Note: After deleting the file contacts2.db All contacts will be lost! Pre-export them to.vcf via Settings → System system → Imports/exports.

3. Contacts or MIUI application errors

MIUI 12-14 firmware has a bug: Contacts can automatically delete numbers if they are saved in a format other than international (e.g. +7 (999) 123-45-67 instead of +79991234567).

How to check:

1. Open any contact and see the format of the number.
2. If it contains brackets, dashes or spaces, correct it to an international format.
3. Save the changes and check if the number is still there after the reboot.

💡

To avoid format problems, enable the “Autoformatting Numbers” option in your contacts settings. You can find it in Settings → Additional → Number format (not available on all models).

If the problem is not in the format, try:

• 🔄 Update the Contacts app via Google Play.
• 📥 Install an alternative application (e.g. Simple Contacts or Truecaller).
• 🛠️ Reset the application settings in Settings → Annexes → Contacts → Warehouse → Reset.

4.Problems with SIM-card-slot

If the numbers are only kept on SIM-The map and disappear, one of three factors is to blame:

1. Damaged. SIM-card (especially if you are over 5 years old).
2. A faulty slot (often found in Redmi Note 8/9 after falls)
3. Double-SIM conflict (if you use two cards)

Diagnosis:

Decisions:

• 🔧 Clear your contacts. SIM-silk-cards (carefully!).
• 📶 Try inserting the card into another slot (if the phone supports dual-SIM).
• 🛒 Replace. SIM-New card (the operator has it for free).

⚠️ If the phone is no longer visible SIM-card after falling or getting moisture, do not try to keep contacts on it - this can lead to complete data loss due to damage to the memory chip of the card.

5. Memory shortage or file system error

When the phone runs out of memory, MIUI It starts to automatically clean the cache and temporary files, including the contact database, and it's not just about internal memory, but also about internal memory. SD-cards if you keep the numbers there.

How to check:

1. Open the Settings → Memory and see the free space.
2. If less than 1 GB, delete unnecessary files or transfer them to your PC.
3. Check it out. SD-Error map through Settings → Memory. → Settings → Verification SD-map.

Additional symptoms of memory deficiency:

• 🐢 Slow operation of the interface.
• 🔄 Self-involved reboots.
• 📱 Message “Insufficient Memory” while maintaining contact.

💡

If the phone shows that there is enough memory, but contacts are still not saved, try formatting. SD-ExFAT card (not an exFAT card) FAT32) — This solves the problem of 30% of devices.

6.Failures after MIUI update

After major updates (e.g., MIUI 13 on MIUI 14), many users experience contact disappearance.

• 🔄 Migration of data to new storage format.
• 🛠️ Conflict between old and new versions of system applications.
• ☁️ Synchronization failure with the cloud.

How to Restore Contacts:

1. Check the MIUI/Backup/AllBackup folder for backups (files with the.bak extension).
2. If there is no backup, try rolling back the update via Settings → About Phone → System Update → Menu (three dots) → Select the service pack.
3. In extreme cases, reset your settings (but it will delete all the data!).

For Xiaomi 12/13 models with MIUI 14, there is a special patch from Xiaomi that fixes the contact bug.

https://new.c.mi.com/global/miuidownload/index

(Select your model and look for the Bug Fixes section.)

7. Viruses or malicious applications

A number of viruses (such as Trojan-SMS) specifically delete contacts so that the user can not contact the bank or customer service, and if the numbers are lost selectively (for example, only bank or service), this is an excuse to check the phone for viruses.

Signs of infection:

• 📵 Lost. SMS confirmation-coded.
• 🔋 The battery goes down fast.
• 📱 Unknown applications appear.

How to treat:

1. Install Malwarebytes or Dr.Web Light and scan the system.
2. Check the application rights in Settings → Apps → Permissions (look for suspicious programs with access to contacts).
3. If the virus is found, remove it and reset the settings to the factory.

⚠️ Note: Some viruses masquerade as system applications (e.g. com.android.contacts!

8. Hardware malfunctions

If none of these methods worked, the problem may be the iron:

• 💾 Damaged flash memory (especially relevant for Redmi) 7/8 after 2–3 years).
• 🔌 Faulty memory controller (symptom: phone accidentally reboots).
• 🔋 Bloated battery that presses on motherboard.

How to diagnose:

1. Check the phone for physical damage (blown body, cracks).
2. Run the memory test through the engineering menu (#4636## → Test).
3. If the phone is warranty – contact the service center Xiaomi.

Cost of repair:

If your phone is older than 3 years, it's sometimes cheaper to buy a new Redmi than to repair the old one, but before you do that, try to reflash the device, which sometimes solves the problem without replacing the components.

FAQ: Frequent questions about saving numbers on Xiaomi