How to change Xiaomi number: the complete guide to changing your Mi Account

Change of mobile phone or loss SIM-The cards often force users of the Xiaomi ecosystem to change their associated number, a critical process because the Mi Account is the key to all of the company’s services, including cloud storage, device search, and data synchronization. Ignoring the update of contact data can lead to a complete lock of the gadget when resetting settings or reinstalling the system.

The process of changing the number depends on whether you have access to the old SIM card or if it has already been lost. In the first case, the procedure takes only a couple of minutes through the security settings; in the second case, you will need to go through a more complex verification of identity to confirm ownership. Data security is the first thing in this case, so the system provides several layers of protection against unauthorized access.

In this guide, we will look at all possible scenarios, from simply changing the SIM in a working smartphone to restoring access to a forgotten password, how to properly untie the device from the old number to avoid problems with the Mi Cloud in the future, and will also look at the nuances of dual-symbol devices and how to bypass activation locks.

Preparation for changing the number in the Mi Account

Before making changes to your account, you need to make sure that all components of the system are ready. A stable Internet connection is a basic requirement, since all changes are synchronized with the company's servers in real time. It is recommended to use a Wi-Fi network to avoid connection breaks at the critical time of updating security data.

You will also need access to an email that was listed as a backup when you register. If you plan to simply replace the SIM card with a new one with the same number, the procedure is as simple as possible. SMS-confirmation.

Check the activation lock status in advance. Go to the settings menu and find the About Phone → All settings → SIM status. Make sure the device is not listed as lost or stolen, otherwise the data change procedure may be suspended by support.

Change the number through security settings (with access to the old SIM)

The most common scenario is that the user has physical access to the old SIM card and the smartphone is unlocked, in which case the number change is through the built-in MIUI or HyperOS security mechanism. Open the Security app or go to Settings → Mi Account → Account Security.

Find the phone number and click on the change button. The system will request identity verification by sending the code to the old number. Once the code is entered, you will be asked to enter a new phone number. It is important that the new SIM card is already installed in the device or in another phone nearby to receive the verification code.

• 📱 Insert the new one. SIM-card to the second slot if your smartphone supports two SIMs.
• 🔐 Enter the code that came to the old number to confirm the right to change.
• 🆕 Enter the new phone number and confirm it with the code from the second SMS.
• ✅ Wait for notification of successful change of data in profile.

⚠️ Warning: Once the number is changed, the old SIM card will no longer be a password recovery tool.

After a successful procedure, two-factor authentication will be automatically redirected to a new number, which means that when you log in from a new device, the confirmation code will come to the new SIM card, and old trusted devices may require re-authorization.

What to do if the old one SIM-card lost or unavailable

When an old number is locked or the SIM card is lost, alternative verification methods are required. Xiaomi's security system provides the ability to restore via backup email. If you have linked mail to check-in, the process will go smoothly, even without access to the phone.

When you try to change a number, select the option "No phone access" or similar. The system will prompt you to send a confirmation code to your email. This is a standard procedure for restoring access, which takes from 5 to 15 minutes. In some cases, you may need to enter an answer to a secret question if it was installed.

It's important to understand the difference between changing a profile number and untipping a device. If you just changed your SIM card inside your phone but didn't update your account, the device search and remote lock functions will not work properly. Mi Cloud will try to send a command to an outdated number.

Device detachment from Mi Account before sale

If your goal is to sell a smartphone or transfer it to another user, simply changing the number is not enough: you need to completely untie the device from your account so that the new owner does not face an activation lock, a critical step that is often ignored, leading to problems with IMEI and access.

To do this, go to your account settings and select "Exit"; the system will warn you that the sync data will be deleted from the device; confirm the action by entering the password from the account; only then the smartphone can be reset to factory settings.

It is also recommended to log into the official Mi Cloud website from your computer, log in and remove the gadget from the trusted list in the Devices section, which ensures that even if it fails during the exit process, the device will not remain tied to your digital profile.

Change the number for two-symbol Xiaomi smartphones

Owners of models with support for two SIM-The cards are often confused as to which number is considered the primary number for an account. In the Xiaomi ecosystem, a specific phone number is tied to the particular one that is specified when registering, regardless of which SIM card slot is in. However, for operator services (calls, Internet) settings may vary.

To change the number used for default calls, go to Settings → SIM-This is where you can assign your preferred SIM card for voice and mobile Internet, which doesn't change your Mi number, but it does affect which SIM card you'll use for two-factor authentication by default, unless otherwise specified.

• 📞 For calls: select SIM 1 SIM 2 as the primary.
• 🌐 For the Internet: Set up your preferred data network.
• 💬 For SMS: Specify SIM card to send messages by default.

💡

Use the "Turn" function SIM-"cards" in the settings if one of the SIM cards has a bad signal in your area.

If you change your Mi Account number to the second SIM card number, make sure it's active. The system can send a check-up call or SMS to the number you specify as new. The logical structure of the account is independent of the physical slot, but depends on the availability of the number.

Problems with activation blocking and their solution

One of the most frustrating situations is when an Activation Lock screen appears after flashing or resetting, which happens if the device was not properly untied from the Mi Account before resetting, and the phone requires you to enter the password and the number from which you last logged in.

If you change your number but you forget to update your data in the cloud, it's going to be harder to restore access, you're going to need to access the Internet to try to enter your old password, if you're successful, the system will suggest you update your phone number, and if you forget your password, you'll have to use the site-based account recovery process.

⚠️ Attempts to unlock someone else’s Xiaomi through third-party services (Bypass) can lead to locking the device on the Internet. IMEI At the server level, use only official methods.

To prevent such situations, always log out before selling or redecorating your phone. Check the list of active devices in the Mi Cloud web version and delete any unfamiliar or sold gadgets. This will ensure digital hygiene and security of your data.

Frequently Asked Questions (FAQ)

💡

Regular updates to your Mi Account are key to the security of your device and data. Don't ignore change notifications SIM-map.