Many users of Xiaomi, Redmi and Poco smartphones face mysterious notifications about the activation service or requests to log in to the account when changing. SIM-This is not just a system error, but an important security mechanism built into the shell. MIUI Understanding how this process works will help avoid locking the device and losing access to data.
The sudden appearance of a lock screen requiring you to enter a password can be frightening, especially if you bought your phone from hand. The activation service is directly related to the device’s binding to a Mi Account. This is the equivalent of iCloud for Apple’s technology, designed to protect the gadget from theft. However, in some cases, the system may mistakenly identify the change. SIM-Cards as an attempt at unauthorized access.
In this article, we will discuss in detail why an activation request arises, how to untie the device before selling and what to do if you forget the login data, and also touch on the topic of unlocking the bootloader, since these processes are often intertwined in the minds of users.
The essence of activation service and protection of FRP
When you first turn on a new Xiaomi smartphone or reset it to factory settings, the system requires authorization. This is an activation service. It checks whether the device is wanted and is not tied to another account, which is part of FRP (Factory Reset Protection) protection.
The main purpose of this protection is to render the phone useless to the attacker in the event of theft, and even after a complete flashing or reset via Recovery, the device will request the data of the last Mi Account used, without which it will be impossible to log in.
Shift. SIM-The card sometimes triggers an extra check. IMEI If there are no matches or the status of the device is marked as “lost”, activation will be suspended until the circumstances are clarified.
It is worth noting that the service works in the background and constantly synchronizes the status of the device, which allows you to remotely lock the gadget or track its location through the cloud service Find Device.
Why does a change request arise when changing SIM-map
Users often wonder why the phone requires re-authorization after replacing the SIM, which is standard behavior in some regions and firmware versions, especially Chinese (CN), thus confirming that the device owner has not changed.
In some cases, the request appears due to time out-of-synchronization or network connection issues at the time of turn-on. If the phone cannot communicate with the activation.cloud.xiaomi.com server, it may go to standby or require manual data entry.
⚠️ Warning: If you bought a phone with your hands and you see someone else's Mi Account when you turn on, do not try to unlock it yourself".
Also, a request may occur if the device has enabled the "Find Device" function, but the reset did not leave the account, in which case the activation service blocks the login until the owner's rights are confirmed.
Sometimes the problem is with modified firmware, and if the previous owner installed custom software or changed the region, security servers may perceive this as suspicious activity.
Instructions: How to untie Mi-account before selling
To prevent the new owner from experiencing activation problems, you need to properly prepare the device, and simply resetting the settings through the Recovery menu is not enough, since the binding to the cloud is maintained.
First, make sure the device is connected to the Internet. Go to settings and find the account section. This is where the access keys are stored.
☑️ Checklist before selling the phone
Once you log out, the system automatically unplugs the device from the security servers, and then you can reset it, and if you just click Reset without exit, the phone goes into lockdown.
The process is as follows:
1. Open Settings.
2. Go to Accounts and Sync (or just Mi Account at the top of the menu).
3. click on the button to exit or delete the account.
4 Enter the password for confirmation.
After a successful release, the screen will be clean. Now you can safely reset your phone through Advanced Settings → Reset to factory settings.
Solving problems with activation blocking
If you are the legal owner, but your account is lost, the situation is resolved by restoring your password.
Go to the official id.mi.com website and select the option "Forgot your password." The system will offer several ways to restore: via SMS, email or backup email address.
If you lose access to your phone number, you'll need to contact Xiaomi's support team, you'll need to provide proof of purchase: check, IMEI box, warranty card, without a check, it's almost impossible to unlock the device officially.
| Type of lockdown | Cause of occurrence | Decision-making |
|---|---|---|
| Requesting Mi password | Reset without leaving the account | Owner's data entry |
| IMEI lockdown | Device on blacklist | Contacting the police/service |
| Network error | No access to the server | Changing Wi-Fi or SIM |
| Regional lockdown | Chinese version (CN) | Change of the firmware region |
What to do if your phone is purchased in China?
Unlocking the bootloader and activation service
For enthusiasts who want to install custom firmware, unlocking the bootloader is a mandatory step, a process that is also closely linked to the activation service, as it requires the device to be linked to an account via a special utility.
Mi Unlock Tool checks the status of the device on the server, and if the account is not tied or less than 168 hours (7 days) have passed since the link, unlocking will not be possible.
It is important to understand that once the bootloader is unlocked, some security features, such as Google Pay (now Google Wallet) or banking apps, can stop working without additional manipulation (such as installing Magisk and hiding root rights).
In addition, unlocking the bootloader automatically erases all data from the device, so make sure to back up important files before starting the procedure.
💡
Before unlocking the bootloader, make sure that the "Developer" settings include a paragraph "OEM-Unlocking and adding Mi Account in the status of Mi Unlock".
The Impact of Regional Adjustments on Activation
Geography plays a significant role in how the activation service behaves. Devices designed for the Chinese market have more aggressive security policies, which can block some Google services or require a Chinese phone number to activate.
When buying a phone on overseas platforms (AliExpress, eBay), there is a high risk of running into a “locked-in” region, in which case the activation service will constantly require confirmation that cannot be performed without access to Chinese servers.
The solution is to flash the device to the global version of the software, but if the bootloader is blocked, it is difficult to do this, sometimes changing the region in the phone settings (if the menu is available) to India or Russia, which changes the list of activation servers.
Global ROM users are less likely to experience activation issues, and their servers are closer and more stable in our region.
💡
Purchase of a smartphone with global firmware (Global Version) eliminates 90% of problems with the activation and operation of Google services in the CIS and Europe.
⚠️ Warning: Don't buy phones marked "Global Version" from unsavory sellers when the Chinese characters are on the box.