When buying a new gadget or, more commonly, a handheld device, the first thing you want to know is whether the smartphone has been restored, used as a demo or perhaps returned by a previous customer. For the Xiaomi ecosystem, this information is often hidden from the surface, but is accessible through system logs and special services.
There are several proven ways to determine when a device was first activated. Some methods require a Mi Account and device anchor, others allow you to get data locally, without an Internet connection. In this article, we will examine all the options available, from simple engineering codes to deep analysis of system files.
The accuracy of the date can vary depending on the version of MIUI or HyperOS, and the region for which the device is released. Chinese firmware versions often contain more detailed logs than global builds. However, even basic methods allow you to determine the age of your device with a high probability.
Analysis of usage statistics in settings
The most affordable and secure way to get information about the time of the device is in the standard statistics menu. Modern shells from Xiaomi carefully track user activity. To find this data, you need to go to Settings, then select About phone and find the line Statistics or Use.
The menu that opens often shows the total system life, and if you see that the device has been running for hundreds of hours and the vendor has claimed that the phone is new and unpacked only yesterday, that's a clear question. System time is a key indicator of actual usage.
💡
Pay attention to the standby time: if it significantly exceeds the time of active screen operation, the device could lie on for a long time in a warehouse or in a store.
Note that the data in this section can be reset when you completely reset your settings to factory (Wipe Data), so this method is effective if the previous owner did not conduct a deep cleaning or if you check the phone you just bought before logging in to your account.
Checking through the engineering menu and USSD-code
The engineering menu is a powerful diagnostic tool hidden from ordinary users, and the most common way to log in to it on Xiaomi phones is to use the code ##6484## or ##4636##. In some cases, especially on newer versions of HyperOS, access to this menu can be restricted or changed.
Once you're in the CIT menu, you'll see a list of all the components of the phone, and we're not so much interested in testing, but in software version and sometimes build date, but there may not be a direct activation date here. More informative is the entry of code ##4636##, which opens the test menu, and you can find information about the system uptime here.
⚠️ Warning: Be extremely careful in the engineering menu. Changing the settings in the sections associated with the radio module or basic settings can lead to signal loss or unstable network operation.
If standard codes don't work, try entering ##3646633##. This code is often active on MediaTek processors, which are used in many Redmi budget models, and here you can sometimes find timestamps of the first service launches in the logs.
:Through Android settings
:With help. USSD-code
:Through the IMEI verification site
:I don't check, I trust the salesman.-->
Use of Mi Account and Cloud Services
If the device was linked to a Mi Account on the first turn on, Xiaomi's cloud services could capture that moment, which is one of the most reliable ways, because the data is stored on the server and it's hard to forge. Go to the official i.mi.com website and log in to the account you used on your phone.
The Devices or Find Devices section often displays a list of gadgets tied to your profile. Each may have a last sync date or a binding date. While this is not always the exact date of first turn on, it gives you an idea of how long the phone has been in use.
Also worth checking is your account activity history. The Mi Account security settings have a login log from new devices, which records the date and time the phone first logged in, often coincides with the time it was unpacked and set up in the first place.
:Log in to i.mi.com
:Go to the "Devices" section
:Find a model of your smartphone
:Compare the date of reference with the date of purchase-->
Comparison of production and activation dates
It is important to distinguish between the date of production of the device and the date of its first activation, which is often confused, leading to incorrect conclusions, information about the production can be found on the box or under the battery (if it is removable), and encoded in the serial number (SN).
The serial number usually contains information about the year and month of release, for example, certain characters in the SN string may indicate 2023, the 10th week. If the phone was activated a month after that date, this is a normal logistics chain. If 2 years have passed since production, and activation allegedly yesterday is a reason to be alert.
| Parameter | Where to find out. | What does it mean? |
|---|---|---|
| Date of production | Box, sticker under the battery, SN | When the phone came off the assembly line of the factory |
| Activation date | System Logs, Mi Account, IMEI Services | When the phone was first connected and connected to the network |
| Guarantee period | Checks, manufacturer's website | Period of official support of the device |
How do you decrypt the serial number?
Analysis of system logs through ADB
For advanced users who want to get the most accurate data, there is a method of analyzing system logs through USB debugging, which requires connecting the phone to a computer and installing the ADB (Android Debug Bridge) platform, which allows you to look deeper than standard settings allow.
First, activate Developer Mode. To do this, go to Settings → About Phone and quickly press 7 times on MIUI Version (or OS Version). Then, in the Developer Menu that appears, turn on USB Debugging.
Connect your phone to your PC and execute a command to get the first installation time of the system or key system applications. Often, the installation date can be calculated from the installation time of the com.android.settings system package or the like.
adb shell pm list packages -f com.android.settingsHowever, it is more informative to look at the logogger. the adb logcat command outputs the streaming log, but we are interested in historical data. You can try to find the time to create system configuration files. If the phone has never been reset, the time to create the file /data/system/users/0/accounts.db (requires root) or similar system nodes can indicate the date of the first setup.
⚠️ Attention: Working with ADB Incorrect commands can result in the deletion of user data or system failure. Use this method only if you understand the risks.
Definition of originality and refurbished status
Knowing the date of the first launch is critical to identifying refurbished devices. Unscrupulous sellers can assemble the phone from used parts, reglue the cases and sell them as new, in which case the date of the first launch of the main board will be significantly different from the date of assembly of the case or accessories.
It is also worth checking the activation date through official verification services for the IMEI. You can enter on Xiaomi’s website or authorized partners (e.g. Tenaaa for Chinese versions) IMEI-If the system shows that the warranty started a year ago and you were sold a new phone today, that's a clear indication that the device was already in use.
Note the discrepancies between the battery’s production date and the phone’s production date. If the battery is released six months before the smartphone, that’s fine. If the difference is several years, it’s possible that the battery (or the entire phone) is recovered.
💡
The coincidence of the warranty start date, the date of first activation of the Mi Account and the date of purchase is the best confirmation that the phone is really new.