How to find out the year of release of the Xiaomi phone: full instructions

Buying a smartphone from hand or on popular Chinese marketplaces often puts the user in need of a thorough check of the device, and release date is one of the key parameters that affect the residual battery life and the relevance of software support. Many buyers confuse the year of release of the model with the actual date of assembly of a particular instance, which can lead to unpleasant surprises during operation.

Xiaomi manufactures a huge number of devices, and it's not always easy to know how old a gadget is in a box or in a window. Older models can lie in warehouses for years, losing battery capacity before the first turn on. In this article, we'll look at all the available methods to determine the age of your Redmi or POCO with high accuracy.

There are several proven methods, from visual inspection of the package to analysis of factory codes. IMEI-We will describe each step in detail so that you can easily identify the age of your device, whether it is the latest flagship or budgetary from previous years.

Visual inspection of packaging and documentation

The first thing you should start looking for is the original smartphone box, and electronics manufacturers are required to put on the label the date of production, or at least the date of release of the model, and look at the barcode and serial number sticker, and often the "Mfg Date" format is indicated next to that data, or just the year and month in numerical terms.

If a box is lost, you should look for a warranty card or user instructions. In some regions, distributors stamp a sales date from which to build, but this method does not provide a 100% guarantee, since a considerable amount of time can pass between factory assembly and sale. The package can be replaced or damaged, which will complicate visual diagnosis.

It's also important to look at the device itself for factory markings. On older Xiaomi models, information could be printed under a removable battery cover. On modern monolithic designs, there are no such inscriptions, so you have to rely on software methods. Carefully study the back panel: sometimes it only shows a year of certification, which may differ from the year of release.

⚠️ Warning: Do not blindly trust stickers on the box if you buy a used device. Unscrupulous sellers can re-add labels from old boxes to new devices or vice versa, hiding the real age of the gadget.

Use of factory codes in the engineering menu

The Android operating system, which runs the MIUI or HyperOS shell, contains hidden partitions for engineers to access through a standard phone dialer. Enter the code ##6484## or #4636##. These combinations may vary depending on the firmware version and the specific smartphone model.

Once you enter the code, you'll see the CIT (Customer Integration Test) menu or the testing menu, and you'll look for the "Version Information," "Device Info" or "Status" sections, and in some cases, the production date is directly on the "Build Date" or "Manufacture Date" line. If you see a date that coincides with the model's active sales period, that's a good sign.

It is worth noting that on new versions of data protection Google access to certain parameters through the USSD-The codes can be limited, and then the system will ask for permission or just ignore the command. For older Redmi Note and Mi models, this method works almost flawlessly and shows the exact date of assembly.

Analysis IMEI-device-code

The most accurate way to do this is to check for IMEI, which is to give each communication module in the factory a unique identifier, which you can find on the box, on the warranty card, or by typing the universal code *#06# in the call, write down 15 digits that you need for further action.

There are many online services that can tell the history of the device by IMEI. Xiaomi's official website has a warranty check page that sometimes displays the date of the device's activation. If the phone was activated in China, the date can be shifted, but the year of release is usually determined correctly.

When analyzing IMEI, look at the seventh and eighth digits, and some manufacturers code for the year and month of release, although Xiaomi doesn't always standardize this system for all assembly plants, so it's better to use automatic decoders that know the specifics of each partner plant.

Checking through settings and About Phone

The standard smartphone interface also stores a lot of useful information. Go to Settings → About the phone. You can find the build number and the Android version here. Although there is no direct release date here, the pre-installed firmware version may give a hint. If the 2026 device is running Android 11, this is a clear sign that the phone was in stock or is being recovered.

In the section "All specs" or "Full information" sometimes occurs "Status" or "Regulatory labels". Clicking on these points can open a hidden window with technical information, including the date of calibration of the screen or battery. POCO Redmi with global firmware is less informative than the Chinese versions.

If the phone is new but the last security update is two years earlier, it's a good idea to think about it, and it probably hasn't received an update in a long time, or it's released with a very old version of the software, which is typical of stagnant runoff.

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Note the logo when you turn on. If the Xiaomi Mi Logo is delayed or has artifacts when booting, this may indicate memory wear or display issues typical of older or refurbished devices.

Use of third-party applications

If the built-in tools fail to get information, specialized utilities from Google Play will come to the rescue. The leader in this area is the Device Info HW or CPU-Z application. They read data directly from the device’s chips, providing detailed information about the hardware.

In the Device Info HW app, you need to go to the "General" or "System" tab, and it often shows the kernel compilation date or firmware assembly date, and although it's not exactly the case production date, the difference is usually a few weeks, and it allows you to know when the device left the assembly line.

Another useful application is AIDA64, which shows the exact build date of the operating system in the Android section, and if you see that the system time or log dates are very different from the current moment, this may indicate a reset or a flashing of the device before selling.

Table of model conformity and release years

For a quick orientation, it is useful to know the approximate years of release of popular series. Below is a table that helps to navigate the generations of devices. Remember that the purchase date can be significantly different from the release date.

Knowing the release year of the series helps to quickly cut out out outright fake. If you are offered the "newest" Redmi Note 13, which in specs and appearance corresponds to the Note 9 (released in 2020), then this is a clear fake or an attempt to pass off the old for new. Always check the visual characteristics with the official renders on the manufacturer's website.

Frequent Questions and Answers (FAQ)