How to know exactly the year of release of the smartphone Xiaomi Mi A1

The exact date of production of a mobile device often arises when buying a gadget from hand or when restoring a warranty case. Xiaomi Mi A1, which is part of the Android One program, was very popular, and now in the secondary market you can find instances released at different times. Understanding when exactly your device came off the conveyor helps to estimate the residual life of the lithium polymer battery and the likelihood of using original components.

There are several methods for determining the age of the device, from simple visual inspection of the package to the use of specialized engineering codes. Not all methods provide a 100% guarantee, since the activation date and assembly date can vary by several weeks. However, by combining the data obtained, you can accurately establish the chronology of your smartphone.

In this article, we will discuss the most effective algorithms of actions that will allow you to get comprehensive information about the origin of the device. You do not need complex tools or root rights, just care and access to the screen of the device.

Analysis of factory markings on the case and box

The most obvious, but often ignored, way is to look at the original packaging. There's always a white sticker on the back of the Xiaomi Mi A1 box with the basic specs. Look for a line that shows the serial number or production date. Usually the date format looks like GYYYYYYYYY/MM or MM/GHYYY, which allows you to instantly orientate yourself in time.

If the box is lost, flip the phone over. The back cover, at the bottom, has a small print of technical information. While global versions of Android One may not have a date, Chinese revisions or market versions sometimes have the label "Mfg Date" marked.

⚠️ Warning: Don't trust the traces of peeled stickers or the marker entries on the case. These data are easy to forge when you restore the device after repair or resale.

Also note the model code listed next to the FCC or CE logo. Different modifications were released at different times, for example, early batches may have different numberings compared to later revisions released before the Mi A2.

For accurate interpretation of the codes on the box, check the table of correspondence of regions and release periods:

Date determination through IMEI and service codes

The most accurate source of information is the internal device identifier, IMEI (International Mobile Equipment Identity), which is assigned to the manufacturer’s 15-digit number and contains coded information about the release date. The standard procedures for reading this code are relevant for the Xiaomi Mi A1.

To get IMEI, Open the Phone app and dial the universal command *#06#. A window with one or two numbers will appear on the screen (for two numbers). SIM-Write down the first 15-digit number, and then you can use the online decoding services, which are based on the first digits (TAC) and subsequent signs determine the week and year of production.

• 📱 Enter the code ##6484## to log into the engineering menu CIT, where in the "Version" section sometimes indicates the date of assembly of software and hardware.
• 🌐 Use official verification sites IMEI, such as imei.info by entering a copied number.
• 📞 Call the operator or manufacturer support service by IMEI check the status of the device.

It's important to understand that IMEI doesn't always indicate the date of assembly of a particular instance, but rather the date of registration of a batch. However, the spread is usually no more than 2-3 weeks. For the Mi A1, this is a fairly accurate method, given the mass production.

⚠️ Note: If the code *#06# is not displayed or consists of zeros, this is a sign of a serious software error or replacement of the motherboard with an unoriginal one.

Use of the “About Phone” menu and account status

The Android operating system running on the Xiaomi Mi A1 has some useful information hidden in the settings section. Go to Settings → System → Phone. Although a direct production date is rarely listed here, you can find the installation date or the first turn on.

Of particular interest is the Google account usage statistics, because the Mi A1 runs on pure Android, it is tightly integrated with Google services, and by going to the Google account settings on the device itself or through the web interface, you can find the date of the first synchronization, which almost always coincides with the first activation of the new device.

Also worth looking at is the Android security patch version.If you see a very old patch (like 2017 or early 2018) and the device hasn't been updated, it's an indirect sign that the phone may have been in stock for a long time before activation.

Some users install third-party apps from the Play Market that read system logs. Utilities like Device Info HW or CPU-Z can display the date of the system core compilation, which is often close to the date (out of the factory).

Checking the activation date through Google and Mi Account

As part of the Android One program, the Xiaomi Mi A1 is double-linked to a Mi Account and a Google account. Google’s Find My Device service often stores the location history and date of the device’s first registration on the network.

To check, log into your Google account through your browser on your computer. In the security or device management section, find your Mi A1. It can display the date of your last and sometimes first connection. It's the most reliable way to know when your phone was first turned on and connected to the Internet.

• 🔍 Log in to your Google account on your PC.
• 📱 Go to the "Security" section" ->"Your devices".
• 📅 Find in the list of Xiaomi Mi A1 And look at the activity details.

If the phone was bought used, the previous owner might not have reset the account, and the story would lead to it, which would not work, and would rely on IMEI analysis or battery status.

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If the phone was reset to a factory setting, the history in your Google account can be updated, and ask the seller if the data was completely cleared before selling.

Analysis of battery status and charge cycles

An indirect but important indicator of the age of the Xiaomi Mi A1 is its battery status: Lithium-ion batteries age not only from use but also from time to time. Even if you haven't used the phone, the chemical processes inside are going on.

For detailed statistics, you can use ADB-Android Debug Bridge, by connecting the phone to a computer. --reset It resets the statistics, and then you analyze the logs and you get the approximate number of charge cycles, but the easiest way is to install a battery monitoring app.

adb shell dumpsys batterystats | grep"Day since start"

This command will show how many days have passed since the last full battery reset, which often coincides with the first activation or the last reset. If the statistics show hundreds of days and the seller claims that the phone is new, it's a reason to think.

⚠️ Warning: A bloated battery or loss of more than 30% of capacity in the first year of use indicates either a defect or that the device is significantly older than claimed.

The normal wear for the Mi A1 is about 15-20% of capacity loss after 500 full charge cycles. If the wear is higher at low mileage, it's likely that the device was manufactured long ago and just lay in storage or was actively in use.

Frequent questions about the production date of Xiaomi Mi A1

In conclusion, we will answer the most common questions users often ask when trying to figure out the age of the device, which will help to avoid typical errors in assessing the state of the gadget.

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The most accurate way to know the release year is by combining IMEI verification through online services and analyzing the date of the first sync of a Google account.