Why Changing a Number in Xiaomi Needs a Special Approach
Xiaomi smartphones based on the company shell MIUI They have a unique architecture of pin-and-route, and unlike Android, you can have a phone number in three places at once. SIM-This creates confusion: users often change numbers in one place, forgetting about the others, which leads to problems with authorization or synchronization.
Xiaomi has a feature that some features (such as Mi Cloud or Find Device) are tied to a system-level phone number. SIM-You may have errors such as "Device not found" or "Identity failed." In this article, we will analyze all possible scenarios for changing the number - from the basic replacement in contacts to the complete reassignment of the Mi Account.
It's important to understand that the procedure is different depending on whether you want to just update your contact details or completely reconfigure your system to a new number.+ s MIUI 14 and for Poco X3 NFC on MIUI 12.5 Algorithms will be different due to changes in the interface.
Method 1: Change the number in the contacts (locally)
The easiest way is to edit the number directly in the phone book, which doesn't affect system settings, but it's important if you want your new number to be displayed to other subscribers when you call.
To change the number in the contacts:
- 📱 Open the Contacts app (an icon with a person’s silhouette).
- 🔍 Find your contact through search or scroll through the list.
- ✏️ Click on the contact, then tap Edit (pencil in upper right corner).
- 📞 Scroll to the Phone field, delete the old number and enter a new one.
- 💾 Save the changes with the Ready or Save button.
If your contact is synced to a Google account or Mi Cloud, the changes will automatically apply to all devices, but this will not replace a number in Xiaomi system services - it requires other methods.
⚠️ Note: If you are editing a contact tied to SIM-The changes will only be saved on the map. SIM No phone number will be transferred to another phone.
Backup your contacts in Settings → Google → Backup
Make sure sync with Mi Cloud is enabled (Settings) → Mi Account → Mi Cloud → Synchronization of contacts)
Check if the old number is used for two-factor authentication in banks or instant messengers-->
Method 2: Update the number in the Mi Account
If you use Xiaomi services (such as Mi Cloud, Find Device or Mi Pay), you need to update the number in your Mi Account profile. This is critical for security: without an up-to-date number, you will not be able to restore access to your account if you lose your password.
Instructions for changing the number in Mi Account:
- Open the Settings. → Mi Account (or Mi Account).
- Slip on the profile avatar at the top of the screen.
- Select Account Management → Personal information.
- Find the Phone section and click Change.
- Enter a new number, confirm it through SMS-code.
- Confirm the old number (if required) for security.
After the change, the number will be used for:
- 🔐 Log in and reset your password.
- 📱 Confirmation of transactions in Mi Pay.
- 🔍 Finding the device through Find Device.
- ☁️ Synchronize data in the Mi Cloud.
⚠️ Note: If you do not confirm a new number within 24 hours, the changes will be canceled. Xiaomi can also block the account if you change the number frequently (more than 3 times per month) - this is a measure against fraud.
Every 1-2 years
Every 5 years
Never changed.
More than once a year.-->
Method 3: Reconfigure SIM-cards (physical substitution)
If you changed. SIM-A card to a new one (for example, a different operator or a number with a different code) is not enough to simply insert it into the slot. SMS, unless additional settings are made.
To allow the system to recognize the new number:
- Insert the new one. SIM-card to slot (for hybrid models, for example, Xiaomi 13 Ultra, make sure that the slot is not occupied by a memory card).
- Go to Settings. → SIM-maps and mobile networks.
- Choose a new one. SIM-Card (if there are two of them) specify the slot: SIM 1 SIM 2).
- Enable the option to Use for Calls and Use for SMS.
- Restart the device (this is mandatory for the application of changes in the MIUI).
For models with eSIM support (e.g. Xiaomi) 12T Pro or Xiaomi 13 Lite - different procedure:
- 📱 Go to Settings. → Mobile network → Add eSIM.
- 📋 Scan it. QR-code from the operator or enter data manually.
- 🔄 Set eSIM priority in the Management section SIM-map.
What to do if your smartphone doesn’t see a new one SIM-map?
Method 4: Reset network settings (if the number is not updated)
Sometimes after replacement SIM-The smartphone continues to use the old number for outgoing calls or sending SMS. This is due to the caching of the operator’s data in MIUI. In such cases, it helps to reset network settings.
How to perform the reset:
- Open the Settings. → SIM-maps and mobile networks.
- Scroll down and select Network Settings Reset (or Wi-Fi, Mobile Network, and Bluetooth Reset in Newer Versions) MIUI).
- Confirm the action by entering PIN-code.
- After restarting the device, reconfigure the mobile network settings (APN The operator is usually installed automatically).
This procedure will remove:
- 📶 Saved Wi-Fi networks and their passwords.
- 📡 Settings of Bluetooth devices.
- 📞 Mobile network parameters (including APN).
Important: Network resets do not affect data in your Mi or Google account, but may require re-authorization in some applications (e.g. banking services).
| Problem. | Possible cause | Decision |
|---|---|---|
| Number does not change in outgoing calls | Operator data caching | Resetting network settings or rebooting the phone |
| They don't come. SMS new-room | Wrong APN settings | Update APN manually in Settings → SIM-map → [Yours. SIM] → Access points (APN) |
| Mi Cloud requires an old number to enter | The number is not updated in the Mi Account profile | Change the number in Settings → Mi Account → Personal information |
| Double call notifications | Conflict between SIM-map | Disable duplication in Settings → SIM-map → Call settings |
Method 5: Re-binding numbers in messengers and banking applications
Changing your phone number affects not only Xiaomi’s system settings, but also third-party services. Many apps (such as WhatsApp, Telegram, SberBank Online) are tied to your phone number and require manual updates.
Instructions for popular services:
- 💬 WhatsApp: Open Settings → Account. → Change the number. Enter the old and new number, confirm through SMS. Wait for the chat history to be transferred (may take up to 1 hour).
- 📧 Telegram: Go to Settings → Change the phone number. Confirm the new number with the code from SMS. Update the number in two-factor authentication settings (if enabled).
Banking applications (Sberbank, Tinkoff, etc.):
- You will usually need to visit the bank branch or call in support to change the number.
- In some cases, you can update the number in the personal account on the bank's website.
If you use Mi Pay for contactless payments, you may need to re-attach your credit card after changing your Mi Account number.
- Open the Mi Pay app.
- Delete the old card in the My Cards section.
- Add the card again by following the instructions on the screen.
💡
Before changing the number in messengers export the history of chats (in WhatsApp: Settings) → chat → Backup copy. This will protect your data in case of a failure when transferring your account.
Features for different Xiaomi models
The process of changing the number may differ depending on the model of the smartphone and the version. MIUI. Below are the key nuances for popular lines.
| Model/Series | Features of MIUI | Change of number nuances |
|---|---|---|
| Redmi Note 10/11/12 | MIUI 12.5–14 | On the menu. SIM-Cards may not be available Network Reset – use Settings → Memory. → Cleanup → Clearing mobile network data. |
| Xiaomi 11T / 12T | MIUI 13-14 with Xiaomi shell EU | To change the number in Mi Account, you need to confirm by email if two-factor authentication is enabled. |
| POCO F3 / F4 / F5 | MIUI for POCO (no-bloatware) | Option Management SIM-maps hidden in Settings → Connections and sharing. |
| Xiaomi 13/14 series | MIUI 14 with HyperOS (new interface) | Change the number in Mi Account is available through Settings → Accounts. → Mi Account → Security. |
For HyperOS devices (e.g. Xiaomi 14 Pro), the number change algorithm is simplified, but additional confirmation may be required via Mi Security. If you see a message saying “Security Check Needs”, follow the on-screen instructions – usually you need to verify your identity via email or backup number.
💡
On HyperOS devices (such as Xiaomi 14), changing the Mi Account number may require confirmation via the Mi Security app.
Frequent Mistakes and How to Avoid Them
When changing a phone number in Xiaomi, users often face typical problems, and let’s look at the most common ones and the ways to solve them.
Error 1: The number does not change in outgoing calls
If, after the replacement, SIM-The card is displayed on the old number, check:
- 📞 Outgoing Call Settings: Settings → SIM-map → [Yours. SIM] → Call settings → Caller ID (should stand for Network Standard).
- 🔄 Reboot your phone (sometimes) MIUI caches the number before restarting).
- 📡 Operator Settings: Contact your provider’s support to make sure the new number is activated on the network.
Mistake 2: Not coming SMS new-room
The problem may be related to:
- 📵 Wrong settings. APN (Check them in the settings. → SIM-map → [Yours. SIM] → Access points (APN).
- 🚫 Blocking. SMS Operator (sometimes it takes time to activate).
- 🔕 Do Not Disturb or Spam Blocker (turn off Settings) → Annexes → Permits → Blocking communications).
Mistake 3: Mi Cloud asks for old number when you log in
If the system still requests the old number after changing the number in Mi Account, this means that:
- 🔄 Changes are not kept (check if they have arrived). SMS-confirmation).
- 📧 The number is not updated in backup contacts (check in Settings). → Mi Account → Security → Standby email/phone).
- 🔒 Account blocked due to suspicious activity (see Xiaomi support via account.xiaomi.com).