Smartphone Redmi Note 12S occupies a special niche in the line of budget devices, offering the user a balance between performance and quality of visual perception. The basis of this balance is quality AMOLED display, which sets the model apart from competitors that use less bright IPS panels. The screen provides deep blacks and high contrast, which is critical when viewing content in low light conditions.
When choosing a device, many buyers focus on the processor or camera, losing sight of the matrix through which they interact with the gadget. However, it is update rate and brightness determine the comfort of use for a long time. In the case of this model, Xiaomi engineers tried to implement technologies previously available only in flagship segments, adapting them to an affordable price.
Matrix specifications
The visual component is based on AMOLED panel 6.43 inches diagonal. This is not just a marketing designation, but a real indicator that affects pixel density and image clarity. Permission 2400×1080 pixels provides high detail, making fonts look clear, and graphics in games do not lose quality even when scaled.
One of the key features is support refresh rate 90 Hz. This means that the screen image is refreshed 90 times per second, making scrolling lists, interface animations and transitions between applications noticeably smoother compared to the standard 60 Hz. The MIUI system is optimized to work with this frequency, minimizing input lag.
To protect against external influences, the manufacturer uses Corning Gorilla Glass 3. Although this is not the latest generation of glass, it has proven its effectiveness in everyday use, withstanding minor scratches and moderate impacts. However, the use of a case and glass screen protector remains a desirable precaution.
- 📱 Matrix type: AMOLED with deep black support
- ⚡ Update rate: 90 Hz for smooth animation
- 🛡️ Protection: Corning Gorilla Glass 3 increased strength
- 🌈 Color gamut: DCI-P3 for rich and realistic shades
The display brightness reaches 1200 nits in peak values, which allows you to comfortably use the phone even in direct sunlight. Indoors, the system automatically adjusts the backlight so as not to tire your eyes.
Operating modes and display settings
The user has the ability to flexibly customize the display to suit their needs through the menu Settings → Display. Here you can select the color temperature to make the picture warmer or cooler, depending on the time of day and personal preference. It's important to note that the system offers several preset profiles, including Vivid, Accurate, and Standard.
Particular attention should be paid to the function Always On Display (Always on screen). It allows you to display information about the time, notifications and battery level without unlocking the device. This saves time and adds aesthetics, turning the phone into a stylish accessory even when turned off.
For those who spend a lot of time reading or working with text, the function Reading, which imitates the ink screen of e-books, reducing eye strain. It is also worth activating vision protection, which filters the blue spectrum of light, which is especially important when using a smartphone before bed.
⚠️ Warning: Disabling the Adaptive Brightness feature may drain the battery quickly in variable lighting conditions because the system will not be able to optimize the backlight automatically.
You can also control the refresh rate in the settings. If you want to save battery as much as possible, you can force install 60 Hz, but in this case you will lose the smoothness of the interface. It is recommended to leave the automatic mode, where the system itself switches the frequency depending on activity.
- 🎨 Color temperature adjustment: adaptation to eye perception
- ⏱️ Always On Display: information on the locked screen
- 👓 Reading Mode: Blue light filtering for comfort
- Smoothness 90 Hz
- Battery Saver 60Hz
- Auto-tuning
- I don't use settings
Problems and common faults
Despite the high build quality, the screens Redmi Note 12S are subject to certain problems characteristic of AMOLED technologies. One of the most common user complaints is the appearance of “ghosting” images or pixel burn-in after displaying static content, such as navigation interface elements, for a long time.
Another common problem is uneven backlighting or the appearance of colored stripes, which often indicates damage to the display cable or the module itself after a fall. In some cases, the screen may become unresponsive to touch in certain areas, requiring a soft reset or part replacement.
Sometimes users encounter that update rate gets lost and returns to 60 Hz for no apparent reason. This may be due to a software glitch after a firmware update or the device overheating. In such cases, rebooting or resetting the display settings helps.
What to do if streaks appear?
If vertical or horizontal stripes appear on the screen, do not immediately change the display. Try doing a factory reset. If the problem remains, it is a hardware malfunction that requires resoldering the cable or replacing the matrix.
It is important to distinguish between software glitches and physical damage. If the screen flashes when you press certain areas of the case, the connection is most likely broken. The Redmi Note 12S screen requires careful handling, since replacing the original matrix can cost up to 40% of the cost of the smartphone itself.
- 👻 Pixel burn-in: residual image after a long static picture
- 📉 Refresh rate failure: reverts to 60Hz due to overheating or software glitch
- 🚫 Insensitive areas: problems with the touchscreen after impacts
Display replacement process
If the malfunction turns out to be critical and requires replacement, it is important to choose a spare part responsibly. There are both original modules and copies (copy modules) on the market, which are significantly inferior in color rendering and brightness quality. For Redmi Note 12S It is recommended to look for the original one AMOLED module with pre-installed frame.
The replacement process begins by heating the back cover or frame, depending on the assembly version, to soften the glue. Then the display module is carefully removed, the cables from the motherboard are disconnected and soldered to the new screen. This is a delicate job that requires specialized tools and experience.
After installing the new screen, you need to check the operation of all functions: proximity sensor, vibration and touchscreen. It often happens that after replacement the sensor needs to be calibrated to avoid accidental clicks. Incorrect installation may result in the screen peeling off or dust getting under the matrix.
☑️ Preparing for screen replacement
You should not try to perform the replacement yourself if you do not have experience working with a soldering iron and microelectronics. Mistakes during disassembly can damage the motherboard, making repairs impossible or extremely expensive.
- 🔧 Originality: choose only certified spare parts
- 🌡️ Heat: Use a heat gun to remove the frame carefully
- 🔌 Cables: check the connection reliability before assembly
⚠️ Attention: When replacing it yourself, do not press on the center of the screen, as the AMOLED matrix is extremely fragile and can crack from the slightest misalignment.
Replacing a display is a complex procedure where the quality of the parts and the skill of the technician play a decisive role in the longevity of the repair.
Comparison with competitors
In the smartphone segment up to 20-25 thousand rubles Redmi Note 12S offers some of the best visual performance. Many competitors in this range use IPS panels with lower resolutions or 60Hz refresh rates. The comparison shows a clear advantage of AMOLED technology in contrast and power consumption.
However, it's worth noting that some models from other brands offer higher refresh rates - 120 Hz. Although the difference of 30 Hz is not always noticeable to the eye, in fast-paced games it can be noticeable. However, optimizing MIUI at 90Hz often makes the interface more responsive than at unoptimized 120Hz.
The table below compares the main display characteristics Redmi Note 12S with popular competitor models:
| Model | Matrix type | Frequency (Hz) | Brightness (nits) |
|---|---|---|---|
| Redmi Note 12S | AMOLED | 90 | 1200 |
| Realme 10 | AMOLED | 90 | 1000 |
| POCO X4 Pro | AMOLED | 120 | 1200 |
| Samsung Galaxy A33 | Super AMOLED | 90 | 800 |
As can be seen from the data, brightness and protection are the strengths of the model under consideration. Despite the lower refresh rate compared to POCO X4 Pro, Redmi Note 12S wins in color reproduction and black depth thanks to high-quality panel calibration.
Maintenance and service life extension
In order for the screen to serve as long as possible, you must follow a number of simple operating rules. Avoid contact with abrasive substances on the surface of the glass, as they may leave micro-scratches that will become noticeable over time. Clean the screen regularly with a soft microfiber cloth, without using harsh chemicals.
Do not keep your phone in the sun for long periods of time, as overheating can adversely affect the performance of liquid crystals and OLED diodes. Also try not to leave static images on the screen for long periods of time to prevent pixel burn-in.
Use high-quality protective glass, which will not only protect you from impacts, but also reduce the load on the matrix itself. When choosing a case, give preference to models that do not put pressure on the edges of the screen to avoid cracks if dropped.
Periodically (once a month), enable Dark Theme mode in all applications to reduce the load on the pixels of the AMOLED screen and extend its life.
Keeping your software up to date also helps keep your display in top condition, as manufacturers often release patches to improve the performance of the power management system and color profiles.
- 🧹 Cleaning: use only soft microfiber
- ☀️ Sun protection: avoid overheating the device
- 🛡️ Case and glass: mandatory protection for durability
⚠️ Attention: Using non-original chargers may cause overheating, which indirectly affects the degradation of display elements.
Questions and answers
Why do colored stripes sometimes appear on the Redmi Note 12S screen?
This may be due to damage to the cable after an impact, a software failure, or overheating. Try rebooting your device. If the stripes do not disappear, diagnostics are required at a service center.
Is it possible to replace the screen yourself at home?
This is technically possible, but not recommended without experience. There is a high risk of damaging the motherboard or breaking the new matrix during installation. It's better to leave this to the professionals.
Why is my screen slow after updating?
After the update, the system may index files and cache data, which temporarily loads the processor and display. Let the phone work in the outlet for a couple of hours, the problem should disappear.
What is the maximum brightness of the Redmi Note 12S display?
Peak brightness is 1200 nits, which is an excellent indicator for comfortable work even in direct sunlight.
Does an AMOLED screen fade over time?
Yes, like any OLED matrix, it is susceptible to pixel burnout when displaying static elements for a long time. Use a dark theme and don't leave static images for long.