How to know exactly the release date of the Xiaomi phone: a step-by-step guide

Knowing the year of Xiaomi’s smartphone release is critical when buying a used device, checking warranty or evaluating the residual battery life. The manufacturer does not always show this information in a prominent place, and sellers can deliberately hide the real age of the gadget. Meanwhile, the difference between a 2022 and 2026 phone with the same model can mean outdated firmware, a worn-out battery or no support for updates.

In this article, we will discuss 7 working methods, from basic (check box) to technical (analyze serial number through Xiaomi services), you will learn how to distinguish the restyled version from the original, why the production date on the sticker may not match the real one, and what to do if the phone is already unpacked. All instructions are illustrated with screenshots and adapted for models from 2020-2026.

⚠️ Warning: The release date on the box and the activation date of the device are different concepts. The first shows when the phone came off the assembly line, the second shows when it was first turned on, the difference between them can be from several months to a year (for example, if the device was in storage).

For accuracy, we recommend using at least 2-3 methods at the same time, for example, check the serial number through the official Xiaomi website and simultaneously study the labeling on the battery.

1.Date check on the original box

The easiest way to do this is to look at the white sticker on the end of the box (usually on the side or bottom) and it has the serial number (S/N) and IMEI, And the production date code. YY/MM/DD or YYWW, where:

• 📅 YY — last two digits of the year, for example, 23 = 2023)
• 📆 MM — month (01 to 12)
• 🔢 DD — day (not always indicated)
• 🔄 WW — week of the year, for example, 25 = 25-I'm a week)

For example, the marking 2308 means August 2023, and 2245 is the 45th week of 2022 (November).In Redmi Note 12 and later models, the date can be encrypted in S/N - the first 4 digits after the letters often indicate the week and year.

Exceptions:

• 📦 On boxes. POCO date is sometimes given in format MM-YY (for example, 05-23 = may 2023).
• 🔧 Devices built to order (e.g. Xiaomi 13 Ultra) may not have a date.

⚠️ Warning: If the box looks suspicious (blurred font, peeling barcode), there is a high risk that it is not original.

2. Analysis of the serial number (S/N) via official website

Serial number (S/N) is a unique device identifier that can tell you the exact date of production, model, and even the region of sale.

• 📱 In the phone settings: Settings → The phone. → General information → Serial number.
• 📋 On the sticker under the battery (if the phone is collapsible)
• 📦 On the box (near the IMEI)

Next, go to the official Xiaomi Verification page (works for all models, including Redmi, POCO and Black Shark). Enter S/N and CAPTCHA.

• 📅 Date of production (e.g, 2023-05-15)
• 🏭 Manufacturer (e.g. Foxconn China)
• 🌍 Region (e.g. Global or China)

An example of decryption:

Serial number: 9DL8T22A05001234




Production date: 2022-05-18 (18 May 2022)




Model: Redmi Note 11 Pro 5G (global)

⚠️ If the site is making an error, "Invalid" S/N", possibly:

• 🔧 Serial number fake (frequent problem with gray sellers).
• 🔄 The device is too new (data has not yet been uploaded to Xiaomi’s database).
• 🌐 You're using it. VPN Proxies (the site may block requests from certain regions).

3. Use of IMEI to determine age

IMEI (International Mobile Equipment Identity) is another unique identifier that can be used to verify the release date.

• 📱 In the phone: dial *#06# - a 15-digit code will appear.
• 📋 On a sticker under the battery or on a box.
• 🖥️ In settings: Settings → The phone. → General information → IMEI.

Please use one of the services:

Important: Services show the date of the first activation of IMEI on the network, not the production. The difference can be from 1 to 12 months (depending on logistics).

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If the phone has been in stock for more than 6 months, the IMEI activation date will be later than the actual production date, which is normal for models released for New Year's Day or before major sales (for example, the Redmi Note 11 in 2022).

4. Check markings on the battery or motherboard

If the phone is collapsible (e.g. Redmi 9A, POCO X3 NFC), you can remove the battery and look at the stickers on the back of the battery or on the motherboard.

• 🔋 MF DATE: 2023-03-10 (battery-production)
• 🖥️ PCBA: 2245 (45th week of 2022)
• 🏭 Made in India 23/01 (January 2023)

How to safely remove the battery:

1. Turn off the phone and wait for the cooling (10-15 minutes).
2. Use a plastic spatula or mediator to fit the lid.
3. Unplug the battery plume (if you have experience) or take a picture of the contacts.

⚠️ Note: On models with a non-removable battery (for example, Xiaomi 13, Redmi) K60) Trying to remove it yourself is not recommended - there is a high risk of damage to plumes or lithium cells.

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5. Check through the Engineering Menu (for advanced)

Some Xiaomi models have hidden production dates in their engineering menus. Warning: Wrong actions here can cause failures! Use the method only if you are confident in your skills.

Instructions:

1. Open the Phone app and dial ##4636##.
2. Go to the phone information section.
3. Look for Manufacture Date or RF Cal Date (the calibration date of the RF module, often the same as the production date).

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adb shell getprop ro.boot.ddr_info

In conclusion, look for a line manufacture_date.-->

The following is the case (for MIUI 13+):

6. Definition according to firmware version and updates

The release date can be indirectly estimated from the first firmware version installed on the phone. For example, if the Settings → About Phone → MIUI version says MIUI 13.0.5 Stable, and the first stable version of MIUI 13 for this model came out in January 2022, then the phone could not have been released before.

How to check:

1. Go to Settings → About Phone → MIUI version.
2. Remember the version (e.g. V14.0.3.0.TMCCNXM).
3. Find a phone model on MIUI Downloads.
4. Check the date of the first stable firmware for your region.

Examples of the Redmi Note 12 Pro+:

⚠️ Note: This method gives an approximate date. The phone could have been released 1-3 months before the first firmware (for example, for testing purposes).

7. Check through Xiaomi service centers

If all previous methods failed, contact the official Xiaomi service center, and if you provide IMEI or S/N, you will receive an official report with the date of production, repair history and warranty status.

How to find the nearest SC:

💰 Cost: In most cases, the check is free, but some centers may charge for issuing an official document (from the official document to the official document). $5 $15).

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If the phone is purchased in Europe or China, the date at the service center may differ from the global version by 1-2 months (due to different shipments).

FAQ: Frequent questions about Xiaomi release date