Buying a Xiaomi smartphone, especially the popular Redmi line, is often a great investment in a quality mobile experience, but the market is full of restored devices and outright fakes. A potential buyer needs a set of specific knowledge to distinguish the original gadget from a replica or device after unqualified repairs. Deep verification avoids financial losses and frustration from unstable system operation.
There are many ways to verify, from simple visual inspection to complex software tests through an engineering menu. A comprehensive diagnostic approach provides the most accurate picture of the device’s technical condition. In this article, we will discuss all the stages of verification in detail so that you can confidently evaluate the device before buying or after receiving an order.
You don't have to rely solely on the vendor's assurances or the external packaging, because modern technology allows you to make high-precision copies, and only a combination of software and hardware verification methods will give you an objective result. Let's go into detail on each step.
Visual inspection of the body and configuration
The first thing that any smartphone examination begins with is a thorough external inspection. The body of the original Redmi is always assembled with minimal gaps, and the materials to the touch meet the stated model specifications. Any creaks, lumps of keys or unnaturally wide gaps between the frame and the screen should alert the buyer.
Pay close attention to the logos and inscriptions on the back cover. In the original devices, the marking is clearly done, the fonts are flat, and the paint does not erase even with intense finger rubbing. The build quality often gives out a fake, as copy manufacturers save on adhesive compounds and accuracy of fitting parts.
⚠️ WARNING: If you find that the Xiaomi logo on the back is pasted over paint or has uneven edges, this is a sure sign of artisanal build or recovery.
The kit also plays an important role: Original smartphones come with a quality charger, cable and protective film (or case depending on the model), the cable must be dense, clearly marked, and the power supply must have the appropriate safety certificates.
- 🔍 Check for a protective film on the screen with the manufacturer’s logo – this is the standard for new devices.
- 🔍 Estimate the weight of the device: counterfeits are often lighter or heavier than the original due to the use of cheap alloys.
- 🔍 Make sure the connectors are (USB, speaker, microphone) have no traces of oxidation or mechanical damage.
Authentication through IMEI and serial number
Every legal device has a unique IMEI (International Mobile Equipment Identity) identifier that allows you to trace its origin. The fastest way to get this code is to dial *#06# in the Phone app. The numbers that appear on the screen must match those printed on the box and on the sticker in the tray under the battery (if it is removable).
For a deep check, use the manufacturer's official website, enter the serial number (S/N) and IMEI in a special verification form. The system will show the date of activation of the device, which will help to determine whether the smartphone is new or has already been in use.
⚠️ Note: If the site produces an error "Not found" or the activation date is significantly earlier than the date of your purchase, the device may be recovered or counterfeited.
It's important to understand that IMEI can be reprogrammed, so matching numbers is just the first step. However, if the numbers don't match or their format doesn't match the standard (15 digits), it's a stop signal to buy. IMEI mismatch on the box and in the system is the main sign of illegal import or assembly from different parts.
There are also specialized databases where you can check if a device is wanted or stolen, especially when you buy used equipment from hand.
Diagnostics with CIT Engineering Menu
The Android operating system used in Redmi smartphones has a special engineering menu called CIT (Customer Information Test) that is accessed through the code set ##6484## in the dialer, the most powerful tool for quickly checking all hardware components.
Inside the CIT menu, you can see all the modules on the phone, from the display and touchscreen to the gyroscope and vibration. You can run tests that automatically check each item, for example, a screen test will show broken pixels, and a sound test will check the speakers and microphone.
☑️ Checklist of checks in CIT menu
If a module fails the test or the check button is missing, it could indicate a software failure or, worse, a replacement of the original part with a substandard counterpart.
Some hidden features may not be available in global firmware versions, but a basic set of tests should always be present. If the code doesn't work, try entering it in the Phone app without pressing the call button.
Analysis of technical characteristics and productivity
Chinese replica manufacturers often give overrated specs that don’t match reality. To see the true picture, you need to use third-party utilities such as CPU-Z, AIDA64 or Device Info HW. These applications will show real screen resolution, processor model and RAM.
Often there is a situation when the settings are specified 8 GB of memory, and the program shows 4 GB. AMOLED-screen is set to cheap IPS or TN It's a low-resolution matrix. The real-world settings of the device are what you pay money for.
| Parameter | What we check. | Norm for the original | Sign of forgery. |
|---|---|---|---|
| Processor | Model and frequency | Complies with the specification | Unknown brand, low frequency |
| Screen. | Permission and type | Full HD+, AMOLED/IPS | HD+, low pixel density |
| Memory. | RAM/ROM volume | Claimed amount | Less than stated, slow speed |
| Camera. | Real authorization | High (e.g. 48 MP) | Interpolation up to 2-5 MP |
Note the speed of the interface. The original Snapdragon or Helio processor provides smooth animations, whereas fakes are often slowed down even in simple menus. Benchmarks like AnTuTu will help compare performance with benchmark values for a given model.
Why can benchmarks lie?
Testing of the display and touch layer
The screen is one of the most expensive components of a smartphone, and it is on it that counterfeit manufacturers most often save. To check the matrix, you can use special images with pure colors (black, white, red, green, blue).
The touchscreen is tested for dead zones and multi-touch, and the engineering menu has a Touchpad test where you run your finger across all the grid cells, and if a zone doesn't respond or reacts randomly (phantom presses), it's a defect.
- 🖐️ Multi-touch check: original Redmi supports 10 touch points at once.
- 🖐️ Brightness and viewing angles: In the sun, the screen should remain readable, and colors should not invert when tilted.
- 🖐️ PWM (flickering): at low brightness, the screen should not flicker noticeably, which is harmful to the eyes.
It's also worth checking the autobrightness and proximity sensor, so hold your hand to the top of your smartphone when you call, the screen should go out, and if that doesn't happen, it's malfunctioning or software locked.
⚠️ If you can hear a characteristic crunch when pressing the screen or you feel an "air cushion", then the display module is glued poorly or replaced with a cheap analogue.
Checking cameras, sound and communication modules
Photography and video is a key feature for many users: take some pictures in good light and with little light; the original should take clear photos with natural color reproduction; fakes often produce a soapy image that is software-intended to be sharpened, which looks unnatural.
The sound is checked by recording the voice recorder and playing the music. The sound must be clean, without wheezing or extraneous noises. The microphone is checked by recording the voice message - your voice must sound clear and loud.
Communication modules (Wi-Fi, Bluetooth, GPS, NFC) also require testing. Try connecting to a Wi-Fi network, finding a device over Bluetooth and launching navigation. Signal stability is an important indicator of the quality of antennas and radio modules.
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For verification NFC Try to pay for the purchase at the terminal or read RFID-tag (for example, a travel card) through the Mi Wallet application or a third-party utility.
Pay special attention to vibrations. Original smartphones have a high-quality vibrator motor that gives a pleasant tactile response. Counterfeiting often has a cheap eccentric that just hums and rattles.
Software analysis and updates
The official MIUI shell (or the new HyperOS) has a unique interface and feature set. Counterfeiting often features an older version of Android with a modified design theme that mimics MIUI. You can check this by going to the settings and trying to find specific Xiaomi features such as "Second Space" or "Quick Notes."
The most important test is to check for updates. Go to Settings → About Phone → MIUI version and click three dots in the corner, selecting "Check Updates." The original device will find the current version of the firmware and prompt you to install it. The fakes will either give an error or suggest you install a fake update.
Settings → About the phone → All parameters → Version of the kernelIf the date is too old (for example, 2-3 years ago) for a new model, it is suspicious. Also in the original firmware there are built-in applications from Xiaomi (Mi Remote, Mi Video, Mi Music) that can not be removed or found their counterparts in Google Play with the same functionality.
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The ability of the smartphone to receive official OTA-updates via the menu - the most reliable software sign of the originality of the device.
The presence of advertising in system applications is, oddly enough, also a sign of the original global or Chinese firmware (advertising can be turned off). In full copies, the system shell is often “clean” from Google and Xiaomi services, which is not typical for the brand.