How to check the release date of the Xiaomi phone: official and hidden methods

Why it is important to know the release date of the Xiaomi smartphone

Buying a Xiaomi smartphone in the secondary market or even in a store can be a surprise, and one of the key parameters that is rarely looked at is the device’s production date, while a few months difference between two identical models could mean a degraded battery capacity, an outdated version of iron, or even a fake.

Smartphone makers like Xiaomi often update components within a single model without changing the name. For example, the Redmi Note 10 Pro, released in early 2021, could have received a different screen or processor by the end of the year. Even in new boxes, sometimes sell devices that have been in stock for more than a year, which directly affects battery life and overall reliability.

In this article, we will look at all the available ways to verify the release date, from official (IMEI, box) to hidden (service codes, firmware), you will learn what methods work for POCO, Redmi and Xiaomi flagship series, as well as how to recognize a fake by inconsistencies in dates.

Method 1: IMEI Testing is the Most Reliable Way

The IMEI (International Mobile Equipment Identity) code is your phone’s unique identifier, which contains production date information, and works for all Xiaomi models, including POCO, Black Shark, and Redmi.

To find out the IMEI, do one of the following:

• 📱 Dial on the phone keyboard *#06# - a window with a 15-digit code will appear.
• 📦 Look at the sticker under the battery (if removable) or on the box.
• ⚙️ Go to Settings. → The phone. → General information → IMEI.

Next, decode the IMEI by the following algorithm:

1. Take the first 8 digits of the code (e.g., 86372404).
2. The last two digits of these eight are the year of production (in the example, 04, which means 2014 or 2026).
3. The next two digits (9th and 10th in full IMEI) are the month.

An example of decryption:

• IMEI: 863724041234567
• Year: 04 → 2026 (prefix 86 confirms the present date).
• Month: 12 → December.
• Bottom line: the phone was released in December 2026.

⚠️ Note: Some Xiaomi models (especially for the Chinese market) may use non-standard encoding IMEI. If the date seems illogical (e.g. 2099), check it through the official IMEI.info service.

Method 2: Date on the box and stickers - what to look for

Xiaomi's original packaging always contains information about the production date, but it can be hidden among other data.

• 📅 Date on the sticker with IMEI (usually YYYY-MM-DD or MM/YYYY).
• 🏭 Serial number (S/N) — first 4 Numbers often code for a year or a week (e.g, 2235 = 2022 year, 35-I'm a week).
• 📦 Barcode – if you scan it through the Xiaomi Service app, the release date can be displayed.

On Redmi and POCO boxes, the date is sometimes specified in WYY format, where:

• W is a week (for example, 15 = 15th week of the year).
• YY is the last two digits of the year (e.g. 23 = 2023).

⚠️ Note: If the date on the box and the date on the IMEI They may be more than 3 months apart, which may indicate repackaging (e.g., an old phone in a new box) or counterfeiting.

Always.|Only if I buy a b/u|Sometimes.|Never.-->

Method 3: Service codes and hidden menus

Xiaomi smartphones contain hidden engineering menus where you can find the data on the date of production. These methods work on most models, but you need to be careful - do not change the settings in these menus!

Methods of verification:

1. Firmware code: Dial ##4636## → Go to the Phone Information tab. Look for Build Date or Manufacture Date.
2. Engineering menu: Dial ##284## → select Manufacture Info. Date can be specified in YYYYMMDD format.
3. For POCO: Use the code ##7626## → Hardware Info → Manufacture Date.

Important: On some models (e.g. Xiaomi 12T or Redmi K50), these codes may not work due to MIUI limitations.

Make sure that SIM-Card inserted (some codes require a network)|Write down all the dates you find for comparison.|Do not change other options in the engineering menu|Restart the phone after checking-->

Method 4: Verification through firmware and MIUI

The MIUI firmware version indirectly indicates the date of the phone's release, new devices get fresh builds, and old ones get outdated ones.

1. Go to Settings → About Phone → MIUI version.
2. Write down the full build number (e.g. MIUI Global 14.0.5.0.TLMCNXM).
3. The last digits after the dot (0.TLMCNXM) often encode the firmware compilation date.

Transcript of the MIUI version:

• 📅 The first two digits after MIUI (For example, 14.0) — year of release of firmware (2014, 2026, etc.).
• 🔢 The third digit (5 in the example) is the month (5). = may).
• 📌 Last letter (M) - model code (does not affect date).

For precise binding of firmware to the date of production:

1. Compare the MIUI version to the official update list.
2. If your firmware is older than 6 months from the current date, the device most likely lay in stock.

💡

If the MIUI version lists a year older than the current one (e.g. 2026 in 2026), it could mean that the phone is intended for a future release or is a fake.

Method 5: Online services for authentication

If you doubt the authenticity of the phone or want to get an official confirmation of the release date, use the services of Xiaomi:

• 🌐 Official website: Mi Verify - enter IMEI serial number.
• 📱 Mi Check app: Download to Google Play (only works on Xiaomi devices).
• 🔍 Third-party services: IMEI.info or SND Deep Info (show date of production by S/N).

Example of a report from Mi Verify:

Model: Redmi Note 11 Pro 5G




Manufacture Date: 2023-07-22




Warranty Status: Valid until 2026-07-21

⚠️ Note: If the service shows a “Device not found” message or no release date, it may mean: Phone is not original (clone). IMEI Reprogrammed (frequently practiced by unscrupulous vendors) and designed for a different region (e.g., the Chinese version for the global market) in which case, check the phone through ##284## (engineering menu) for compliance with the declared specifications.

Frequent Mistakes and How to Avoid Them

When checking the release date of Xiaomi, users often encounter false data, and here are typical errors and ways to get around them:

• 🔄 Overstuffed IMEI: If the date is IMEI It does not match the phone’s appearance (e.g. 2020 for a new model), check out the phone’s appearance. IMEI *#06# and on the box, they must match.
• 📦 Fake box: Xiaomi box stickers have holographic elements and a microtext font.compare with official samples.
• 📱 Settings reset: If the phone was reset to factory settings, the date in the firmware may be lost. Restore it through Settings → Additionally. → Recovery and discharge → Local backup.
• 🔧 The Wrong Region: Phones for China ROM) You can show the date in a different format. Install global firmware through the Mi Flash Tool.

If you find any discrepancies:

1. Take a picture of the IMEI, serial number and date on the box.
2. Contact the seller and request a check or warranty card.
3. Contact Xiaomi Support with photos and device data.

💡

If the difference between the date of the IMEI and the date on the box exceeds 1 month, this is a reason for returning the phone under warranty (Article 18 of the Consumer Protection Act).

FAQ: Answers to Frequent Questions