Where and how to check the date of manufacture of the phone Xiaomi: all the ways

You bought a Xiaomi smartphone and want to know when it was released? You may be checking the authenticity of the device before you buy it, or you want to estimate the actual age of the gadget. The date of production of the phone can tell you a lot, from the relevance of the firmware to potential battery problems. In this article, we will analyze all the official and hidden ways to find out the date of manufacture of Xiaomi, from decrypting the serial number to analyzing the factory packaging.

It's important to understand that manufacturers don't always specify the release date directly. Xiaomi has this information encrypted in codes that can be decrypted with special services or manually, we'll show you how to do this without risking warranty or using questionable software, and you'll learn why the date on the box and in the system may not match, and what this means for the owner.

If you're planning to buy a used phone or just want to check your gadget, this guide will help you avoid counterfeiting and understand how much time the device has spent in stock.

1. Checking the date by serial number (IMEI/SN)

The most reliable way is to extract the date from the serial number (SN) or IMEI, which Xiaomi has encrypted month and year information in these codes.

Xiaomi serial number is usually 11-14 characters long and contains letters and numbers, and the format may vary depending on the model, but the overall structure is as follows:

• 🔢 The first 2-4 characters are the factory or model code.
• 📅 5-8 characters - date of production (month) + year).
• 🔤 The remaining characters are a unique device identifier.

Example: Serial number K6803D3AG10123 may mean that the phone is released in October 2021 (where 10 is a month, 1 is 2021).

* Additional model information may be required to accurately determine the year (e.g., the Redmi Note 10 could not have been released in 2029).

⚠️ Note: Some Xiaomi models (e.g, POCO Black Shark can be used in a different format. SN. If the decryption doesn’t work, try the methods in the following sections.

Where to find the serial number:

• 📱 In the phone settings: Settings → The phone. → General information → Serial number.
• 📦 On the sticker under the battery (if removable) or on the SIM-tray.
• 📄 On a check or a security card.

2.Date of production on the box: where to look and how to read

If you still have the original packaging, you can find the release date without turning on your phone. Xiaomi boxes usually show production date in one of two formats:

1. Direct format: MFG DATE: MM/YYYY or Date of Manufacture: YYYY-MM-DD (rarely).
2. Encrypted code: for example, 2103 → March 2021.

Where to look:

• 📦 On the side sticker of the box (near the barcode).
• 🏭 At the bottom of the box in fine print.
• 🔖 Under the tape IMEI (if there is).

Example of code decryption on the box:

Code: 2008


Transcript: August (08) 2020 (20)

⚠️ Warning: The date on the box may be 1-3 months different from the actual date of production of the phone. This is normal: the package is printed in advance. If the difference is greater, it may be counterfeit or repackaged.

💡

If there is no date on the box, check its authenticity by barcode through Xiaomi Verify service.

Verification through MIUI: Hidden menus and system information

MIUI has hidden data in the firmware where you can find the date of production, and this method only works on the original firmware (not custom).

Enter the code ##4636 in the phone application##|Go to the menu "Phone Information"|Find the line "Build Date" (Build Date)|Compare it to the current date (difference) >2 years - a reason to be wary)-->

Alternatively:

1. Open the settings → About the phone → version of MIUI.
2. Use the Kernel Version line several times.
3. A menu will appear with technical information, where the firmware compilation date may be indicated (example: Wed Oct 12 14:22:33 CST 2022).

Note: The firmware compilation date is not the same as the phone’s production date, but if it’s older than 1-2 years, the device was likely in stock.

4. Online services for checking the date of production

If manual methods fail, you can use official and third-party services to check.

• 🌐 Xiaomi official website: Go to the checkout page. type in IMEI or SN. The system will show the activation date (not production!) and the status of the warranty.

Third-party services:

• IMEI.info – shows the release date on the database.
• SNDeepInfo – decrypts the Xiaomi serial numbers.

⚠️ Attention: Do not enter IMEI or SN Scammers can clone yours. IMEI Use only the verified services listed above.

5. Physical examination: What the phone itself can tell

If digital methods have not helped, look for physical signs that indirectly indicate the age of the device:

• 🔋 Battery: If the phone runs out in 3-4 hours with moderate use, the battery is likely to be older than 2-3 years.
• 🛠️ Traces of wear: Yellow display (in old ones) OLED-Screens. Deleted inscriptions on the screens. SIM-Scratches on the camera (if the phone was lying without film).
• 📦 Old Xiaomi models came with microUSB, new – with USB-C. Also check for a 3.5mm adapter (the latest models don't have one).