Buying a Xiaomi Redmi smartphone in the secondary market or even in an official store sometimes carries unpleasant surprises. Vendors are not always honest about the fact that the device has already been used, and the appearance can be misleading — the box is whole, the tapes are not removed, but the phone is long activated. According to statistics from 2023, up to 15% of smartphones sold as “new” have actually been restored or used before.
In this article, we’ll look at 7 reliable ways to determine whether Xiaomi Redmi has used before you, from IMEI checks to hidden logs, and learn what traces the previous owner leaves, even if they dropped the phone to factory settings, and how to recognize a “gray” import or a restored device. All methods are tested on Redmi Note 12/13 Pro, Redmi 10/11 and POCO X5 models, but are suitable for any smartphone on MIUI 13/14/14.5.
We'll focus on the critical markers that vendors are trying to hide: battery wear, traces of connection to the Mi Account, residual cache data, even physical signs of use, and you'll also get a checklist for quick on-site checks and learn to distinguish factory firmware from re-shopped devices.
1.IMEI Check: The First Step to the Truth
The IMEI code is your smartphone's unique identifier, which allows you to track your phone's history, and even if your phone has been reset, you can use IMEI to find out the date of first activation, the country of sale, and the warranty status.
Dial on the keyboard of the phone combination *#06# - the screen will appear one or two 15-digit numbers (for devices with two digits). SIM-Write both of them down. IMEI or take a picture of the screen.
Check the code through official services:
- 🔍 Xiaomi official website: go to the checkout page and enter IMEI. The system will show the warranty status and activation date if the activation date is older. 1-2 months, and the seller claims that the new phone is a clear sign of fraud.
- 🌍 IMEI.info: The service identifies the country of manufacture and model, for example, if you buy a Redmi Note 12 Pro.+ 5G The service shows that the device from India is a “gray” import with possible localization problems.
- 📦 GSMArena: You can check it here IMEI If the model is not the same as the one claimed (for example, Redmi 11 India is displayed instead of Redmi 11 Prime) – this is a reason to be wary.
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Warning: Some vendors fake IMEI stickers on the box. Always check the code against what appears on the phone screen at *#06#. If the numbers don't match, you're either a fake or a device with a replacement motherboard.
If the IMEI test is in doubt, proceed to the next method - battery status analysis.
Battery wear: how to find out the real age of the phone
The battery is one of the most vulnerable components of a smartphone. Even if the phone looks like new, the battery can have hundreds of charging cycles. Xiaomi Redmi has a hidden menu that shows accurate wear information.
To get there:
For more detailed analysis, use the AccuBattery app (available on Google Play).
- 📊 Real capacity (e.g. 4800 mAh instead of the claimed 5000 mAh).
- 🔄 Number of charging cycles (more than 100 cycles) – a sign of active use).
- ⚡ Discharge speed in mAh / h (for a new phone in standby mode - no more than 1-2% hourly).
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Warning: Sellers sometimes replace the battery before selling to hide wear and tear. Check if the factory film is removed from the battery (the new Redmi is yellow with the Xiaomi logo).
Confirm IMEI box-and-phone|Check the battery health in #4636##|Install AccuBattery for detailed analysis|Check the battery for traces of dismantling|Compare the real capacity with the passport-->
3. System log analysis: traces of the previous owner
Even after a full reset, MIUI still has traces of use, and you can find them in hidden logs that aren't cleaned by standard methods, and you'll need ADB, the Android debugging tool.
Instructions for verification:
- Turn on Developer Mode: Go to Settings → About Phone and click on MIUI Version 7 times.
- Activate USB Debugging in Settings → Additional → For developers.
- Connect the phone to the PC, install ADB drivers and execute commands in the terminal: adb shell su logcat -d | grep -E "boot|user|account|miui" These commands will output the system boot logs, information about accounts and user actions.
What to look for in the logs:
- 🔑 Traces of Mi Account: lines with mi_account XiaomiAccount indicates that the phone was tied to a Xiaomi account.
- 📱 Application Installation Logs: Commands like PackageManager: Install with dates older 1-2 week-long.
- 🔄 Resets: FactoryReset records or wipe_data They say that the phone has already been dropped.
Critical information: If there is a line in the logs "first_boot": false, which means that the phone has already passed the initial setup and was used before.
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Note: Some vendors are reflashing phones with custom firmware (e.g. Pixel Experience) to cover up usage. Check the MIUI version in Settings → About the phone. If it's different from the official one for your model, that's a cause for suspicion.
4. Physical signs of use: what hides the case
Looking at the phone can tell you more than you think, and Xiaomi manufacturers use a few "novelty markers" that are hard to fake:
What to check:
- 📦 The factory tape on the screen: on the new Redmi, it has a microperforation around the edges and the Xiaomi logo in the corner.
Pay special attention to the stickers and seals:
| Element | New phone | B/u or rebuilt |
|---|---|---|
| Sticker on the IMEI box | Whole, no trace of peeling off. | A dent, replaced or missing |
| Seal on the tray SIM-map | Whole, with the Xiaomi logo | Torn, absent or replaced |
| The security tape on the camera. | Transparent, no bubbles | Yellow, scratched or removed |
| Serial number on the hull | Clear, not erased. | Blurred or painted |
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Note: On Xiaomi Redmi after 2022, the serial number is duplicated under the battery. If the seller refuses to show it, this is a sign that the case has been opened (for example, to replace the battery or motherboard).
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To check the originality of the case, compare the color and texture of the back panel with photos of the official Xiaomi website.
5. Verification through Mi Account: Link to the previous owner
One of the most reliable ways to determine if a phone has been used is to check the link to the Mi Account, and even if the seller has untied his account, traces remain in the system.
How to check:
- Go to Settings → Accounts → Mi Account.
- If the account is not linked, click Login and try to create a new account. The system may give an error: "This device is already linked to another account."
- If the account is tied, but the seller claims that the phone is new, ask him for an uncouple in your presence.
What to do if your account is not untied:
- 📧 Ask the seller to send a request for an unbundle through the official website.
- 📱 If the seller refuses, it is an excuse to refuse to buy!
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Note: Phones with MIUI 14+ have now introduced Find Device, and if the previous owner hasn’t untied the device, they can lock it even after resetting. Check this in Settings → Security → Find Device.
What to do if your phone is blocked by Mi Account?
6 Performance Test: benchmark as a deception detector
If the phone has been used intensively (like for gaming or mining), its performance will be lower than claimed.Run Redmi through tests to identify hidden issues.
Recommended annexes:
- 📊 AnTuTu Benchmark: Compare the result to the reference values for your model. For example, the Redmi Note 12 Pro+ 5G should be gaining 500,000+ If it's under 450,000, it's a sign of wear and tear.
What should alert you:
- 🔥 Phone heats up above 45°C in normal mode (check in ##4636## → Battery information).
- 🐢 There are sharp drawdowns in the tests FPS or hanging.
- 📉 Results benchmark 20% or more below the model reference.
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Note: Some vendors are swapping motherboards for cheap ones (for example, instead of Snapdragon 7 Gen 1 they put Snapdragon 695). Check the processor model in Settings → About Phone → Full Specification or through the CPU-Z app.
7. Verification of completeness and documents
Even if the phone is in perfect condition, incomplete or fake documents should alert you.This is what should be in the box of the new Xiaomi Redmi:
Official equipment (on the example of Redmi Note 12 Pro):
- 📱 Smartphone in factory film.
- ⚡ Charger (power must correspond to the model, for example, 67W Note 12 Pro for the Note+).
- 🔌 Cable USB Type-C (original Xiaomi cable has the inscription) 5A plug-in).
- 📄 Warranty card with the store stamp and date of sale.
- 📦 Box with a holographic sticker Xiaomi (it is often missing or crooked on fakes).
What to check in the documents:
- 📅 The date of sale in the warranty card must coincide with the current (admissible discrepancy in the 1-2 weeks of transportation).
- 🏷 The serial number in the check and on the box must match the number in Settings → The phone. → General information.
- 🛒 Shop name: if a check is from Ozon or Wildberries and the seller claims that the phone from the Mi Store is a hoax.
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Attention: In 2023, there has been an increase in the number of refurbished phones sold under the guise of new phones, which are labeled Refurbished on a box or in documents, and Xiaomi does not officially sell refurbished phones in Russia, only in Europe and the United States.
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If the seller refuses to provide the original box or documents, claiming that they are lost, this is a sure sign that the phone is used or recovered.