How to find out the year of the release of the Xiaomi phone: official and hidden methods

Did you buy a used Xiaomi smartphone and want to make sure the seller didn’t cheat on the year of release? Or are you planning to sell your device, but do not remember when it came off the assembly line? The date of production of the phone affects its market value, the period of support for updates and even the risk of breakdowns (for example, battery wear in older models). Unfortunately, Xiaomi does not specify the year of release directly in the settings or on the case, but there are several reliable ways to determine it.

In this article, we will look at 5 working methods, from IMEI testing to serial number analysis to box data analysis, how to decode factory labeling, where to look for hidden tags on a device, and what online services give accurate information, and why some methods can give incorrect results for models from 2023 to 2026 and how to avoid this.

1. IMEI Verification: The Most Accurate Method

The International Mobile Equipment Identifier (IMEI) is a unique 15-digit code that is assigned to each phone, which not only tells you the year of release, but also checks if the device is blacklisted (like stolen), which Xiaomi uses to keep it within a month.

Where to find IMEI:

• 📱 In the phone settings: go to Settings → The phone. → General information → IMEI.
• 📞 Type on the keyboard *#06# - the code will be displayed automatically.
• 📦 On the sticker under the battery (if removable) or on the box.

How to check on IMEI:

1. Copy the first IMEI (if you have two, take any one).
2. Go to the official website of IMEI.info or IMEI24.
3. Enter the code in the verification field and press Check.
4. In the results, find the Manufacture Date string.

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If a site shows an error "IMEI not found," try another service or check the code you entered, sometimes the problem is the last IMEI check digit that can be recalculated online.

⚠️ Note: Some services may show the date of activation of the phone instead of the date of production. For Xiaomi, this is critical - the difference can be as much as several months.

2. Decoding of the serial number (S/N)

The serial number is another unique identifier that contains encrypted release date information. Xiaomi's serial number format depends on the year of production and model. For example, for smartphones 2018-2022, the standard is used. YYYYMMDDXXXXXX, where:

• YYYY – year (e.g. 2021)
• MM – month (01–12),
• DD - day (01-31),
• XXXXXX is a unique device code.

Where to find the serial number:

• 📱 In settings: Settings → The phone. → General information → Serial number.
• 📦 On the box sticker (near the barcode).
• 🔋 Under the battery (for models with removable battery).

An example of decryption:

Serial number: 20210515A1B2C3


Decoding: 2021, 05 month (May), 15th.

⚠️ Note: Since 2023, Xiaomi has changed the format of serial numbers for some models (for example, Redmi Note 12 or Xiaomi 13).Now the date can be encrypted in the middle part of the code or not at all.

3.Date on the box and device stickers

If you still have the original packaging, check it for a production date, and it can be listed in several places on Xiaomi boxes:

⚠️ Warning: The date on the box may not match the actual year of release of the phone for 1-3 months, this is due to logistics: the device could be produced in December 2021, and packed in January 2022. IMEI or serial number.

Also, look at the batch code, which is sometimes listed next to the barcode, and can be decrypted through specialized services like Apple Coverage (yes, it works for some Xiaomi models as well).

Yes, always |Only if in doubt |No, I don't check |I don't know how to do it-->

4. System settings and hidden menus

Some Xiaomi models store production date information in hidden engineering menus, a method that is suitable for advanced users, as it requires entering service codes.

Instructions for most smartphones:

1. Open the Phone app.
2. Enter the combination: ##4636## (to check your phone information).
3. Go to the Battery Information or Hardware Info tab.
4. Find the Manufacture date or Battery date (the battery production date often coincides with the phone release date).

For models running a Qualcomm processor (e.g. Redmi Note 10 Pro, POCO X3 Pro), try the code:

##225##

In the menu that opens, look for the RF Band section, where the build date can be specified.

Make sure your phone is 50%+ charged.

Copy all the dates found for reconciliation

Do not change the settings in the engineering menu!

Check the battery date separately-->

⚠️ Note: Not all service codes work on new models (e.g. Xiaomi 14 or Redmi Note 13) Incorrect input may result in resetting or locking the device. If the code does not work, do not try more than 2 times.

5. Online services for model verification

If previous methods didn't work, use specialized databases that collect information about release batches and serial numbers.

• 🌍 SNEI — serial number database with date of production and country of manufacture.
• 🔍 IMEI-Pro is a paid service with advanced information (free shows only a year).
• 📊 Numari – Data aggregator IMEI Serial numbers (supported by Xiaomi, Redmi, POCO).

How to use:

1. Enter the serial number or IMEI in the search box.
2. Select the phone model from the drop-down list (if required).
3. Pay for the report (if the service is paid) or wait for free results.
4. Check the production date or production year line.

⚠️ Note: Some services may show the date of first activation instead of the date of production. This is true for phones that have been in storage for a long time. For example, the device could be released in November 2021, and activated only in March 2022. 4 months difference is normal for Xiaomi.

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The most reliable way is a combination IMEI + If the data match, the probability of error is minimal.

Frequent Mistakes and How to Avoid Them

Even experienced users sometimes get it wrong when determining the release year, and here are the most common pitfalls:

• 🔄 Confusion between the date of production and the date of activation: for example, the phone could be released in 2020, but sold only in 2021.
• 📦 Fraudsters often swap the packaging to hide the real age of the device.Back the barcode on Xiaomi's official website.
• 🔋 Battery date ≠ The battery could have been replaced, so its date could be newer or older.
• 🌐 Regional differences: Phones for China and the global market can have different release dates even in the same batch.

To avoid mistakes:

1. Use a minimum of 2 verification methods (e.g. IMEI + serial number).
2. Check the data with the official guarantee (if it is valid).
3. Check the history of the device through the official Xiaomi service (requires binding to the Mi Account).

⚠️ Note: If all methods show different dates, it is likely that the phone has been repaired or flashed, in which case we recommend checking it through the Xiaomi service center - they have access to the full history of the device.

FAQ: Answers to Frequent Questions