How to change the phone number on Xiaomi smartphones: all ways

Changing the phone number on Xiaomi devices can be required in a variety of situations, from a banal change of the SIM card to the need to update the data in the Mi Account after buying a used phone. However, many users are faced with the fact that the system does not always respond clearly to the replacement of the SIM - the old number continues to appear in contacts, messages or even in security settings. In this article, we will discuss all the current ways to change the number, including nuances for different versions of MIUI and smartphone models.

The peculiarity of the Xiaomi ecosystem is that the phone number can be tied not only to the physical SIM-It's not enough to just insert a new SIM, but also to your Mi Account profile, and to individual services like Mi Cloud or Mi Pay, so you're going to have to synchronize changes in multiple places. SIM), and advanced (resetting the cache of telephony), and also explain why sometimes the number "stuck" in the system.

1. Replacement of the number through settings SIM-map

The most obvious way is to update the number information directly in the control menu. SIM-This method works on most Xiaomi models (from Redmi Note 10 to Xiaomi 14) and does not require special knowledge:

Open the Settings app and go to the section SIM-maps and mobile networks. Here you'll see a list of installed SIM (If you have more than one, tap the card, the system will display the current number (or suggest updating it if the data is outdated). MIUI).

• 📱 For single-simplified models: the path will be shorter - the screen with the number will open immediately.
• 🔄 For two-sim: select the slot (SIM 1 SIM (2) before updating.
• ⚡ If the button is inactive: restart the phone or remove/paste SIM freshly.

Once the change is confirmed, the system may request a reboot – this is normal, especially on older firmware versions (e.g. MIUI 12 and below).If the number is still not updated, check if your operator supports the number transfer function over the network (not all virtual operators do this).

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If after replacing the SIM, the number appears as “Unknown”, try manually entering it in the format +7XXXXXXXXXXXX in the contact settings “I” (My profile).

2. Update the number in the Xiaomi account (Mi Account)

If you use Mi Account to sync your data, the old number can remain tied to your account even after you physically replace the SIM, which affects Mi Cloud, Find Device, and other services, and to update your account number:

1. Open Settings → Xiaomi account.
2. Tap an avatar or profile name, then select Account Management.
3. Go to the Phone Number section and click Change.
4. Enter a new number, confirm it through SMS-code.

Important: if you bought the phone with your hands, the previous owner could not untie your number from the Mi Account, in which case the system will require you to enter a password from the old account, the only solution is a complete reset of the phone (with the deletion of all data) or contact Xiaomi with proof of purchase.

3. Resetting the cache of telephony (for stubborn cases)

Sometimes Xiaomi's system keeps showing the old number even after all the manipulations, and it's all about caching the phone module data, so you can cache it.

Go to Settings → Applications → Application Management. Search for Phone (or Phone on global firmware). Select an app, then click Storage and clear the cache and data. After that, restart the phone.

⚠️ Warning: Clearing the phone application data will reset the call log. Pre-export it through Settings → Google → Backup (if sync with Google Account is enabled).

Some models (such as the POCO F5 or Redmi K60) may require additional network resets.

→ SIM-maps and mobile networks → Additional → Network reset

4. Problems with displaying the number in messengers

Even after successfully changing the number in the phone settings, messengers (WhatsApp, Telegram, Viber) can continue to show the old number, which is because they are attached to the SIM at the first sign-up stage.

• 💬 WhatsApp: Go to your account settings and select Change number. You will need confirmation via SMS new-room.
• 📎 Telegram: the number is permanently linked to the account, you need to create a new account to change it (old chats will not be transferred).
• 📞 Viber: Similar to WhatsApp, there is an option to change the number in the profile settings.

If you are selling a phone, be sure to untie all messengers from the old number, otherwise the new owner will get access to your chats (especially for Telegram, where there is no SIM binding).

5. Features for different versions of MIUI

The interface and logic of changing the number may vary depending on the firmware version, and the key differences below are:

On HyperOS (new firmware for Xiaomi 14, Redmi K70, etc.), the process is as automated as possible: the system itself offers to update the number when a new SIM is detected. However, if you use custom firmware (for example, LineageOS), the functionality may be limited.

6. Frequent errors and their solutions

When changing numbers, users often face typical problems, and here are the most common ways to fix them:

• 🚫 "Cannot update the number: check if it is worth it SIM-card in the slot for the second line (on some models the main slot — SIM 1).
• 🔒 "Requires a password from the previous account, which means that the phone is tied to someone else's data.
• 📵 "No network after shift. SIM": Make sure the new card is activated by the carrier and supports your phone’s frequencies (e.g., Redmi Note 12 doesn’t work with the phone’s frequency). 2G-maps of some operators).

⚠️ Note: If you use two-factor authentication in Mi Account, change the number without first disabling. 2FA It can block access to your account before you replace it. SIM Check the security settings in the Settings → Xiaomi account → Security.

Make sure that the new SIM is activated by the operator

Save contacts in Google Account or memory card

Untie the old number from messengers

Check the balance. SIM (obtain SMS-code)

Make a backup copy of the data (in case of reset)

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7. Change the number on devices without SIM-cards (eSIM)

New Xiaomi models (e.g. Xiaomi) 13T pro POCO F5 Pro) support eSIM - virtual SIM-The process of changing the number here is different:

To add or change eSIM, go to Settings → SIM-maps and mobile networks → Add a mobile tariff. The system will offer scanning. QR-code from the operator or enter data manually. Once activated, the number is updated automatically, but may need to restart.

Important: not all operators in Russia support eSIM for individuals (for 2026, MTS, Beeline and Tele2).

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The eSIM cannot be physically removed – if you are selling a phone, be sure to delete the eSIM profile through the settings, otherwise the new owner will be able to use your tariff.

FAQ: Frequent questions about changing the number in Xiaomi