Why Xiaomi’s phone screen turned yellow: a full analysis of the reasons

A sudden change in the color of the display on Xiaomi, Redmi or Poco smartphones often causes panic among users. It would seem that the image was bright and saturated in the morning, and now the entire interface has become an unpleasant yellowish or sepian shade. In most cases, this does not indicate a breakdown of the matrix, but is the result of software filters or incorrect system settings.

Modern OLED and IPS screens have a lot of customization capabilities that manufacturers are actively using to protect the user's vision. However, sometimes automatic algorithms fail, or the user accidentally activates color-distorting modes. Understanding how exactly MIUI and HyperOS software work will quickly return the natural color reproduction.

In this article, we will look at all possible causes, from harmless software functions to serious hardware malfunctions, and learn how to diagnose a problem and fix it yourself without resorting to service centers, unless it is urgently needed.

Software filters for vision protection: Night Light and Reading Mode

The most common reason Xiaomi’s phone screen turns yellow is because of its activated eye protection feature, which can be called Night Light or Read Mode, which is designed to reduce blue spectrum radiation, which researchers believe can disrupt circadian rhythms and cause eye fatigue when used for long periods.

When this mode is on, the system programmatically filters out blue pixels by adding a warm, amber hue to the image, and the intensity of this effect can be adjusted manually or automatically depending on the time of day. If you notice yellowness in the evening or at certain times of the day, the filter schedule is most likely to be to blame.

To check the settings, go to Settings → Screen → Vision Protection (or Settings → Screen and Brightness → Read Mode). You can see the intensity slider and schedule switch here. If the slider is moved to the right, the screen will be painted yellow even during the day.

It's important to understand the difference between being on and off. In automatic mode, the phone uses data about sunrise and sunset in your area, so that during the day the colors may be normal, and after sunset, the screen will turn yellow.

• 🌙 Night mode: Shifts the color temperature to the warm side to reduce the strain on the eyes in the dark.
• 📖 Read Mode: Makes the background of applications white and the text black, mimicking electronic paper, and often adds a strong yellow filter.
• ⏰ Automation: A feature that includes filters on schedule or when battery saving is enabled.

If you use third-party book-reading apps or browsers with built-in night mode, they can conflict with Android system settings, amplifying the yellowing effect. Check the settings of each frequently used app separately.

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To quickly check, turn off all filters through the notification curtain: swipe from top to bottom and find the icon "Vision Protection" or "Read Mode." If the colors are restored instantly, the problem is the software settings.

True Tone function and color rendering calibration

Newer Xiaomi smartphones, such as the flagship Xiaomi 13/14 or Mi 11 series, have adopted technology similar to Apple’s True Tone, which uses light sensors to analyze the color temperature of ambient light and adjusts the white display balance accordingly.

If you're in a room with warm lamp lighting, the screen will also turn yellower to blend in with the environment and appear "white paper" -- not a defect, but an advanced comfort feature -- but many users are annoyed that the colors of photos or products in an online store are distorted.

⚠️ Warning: True Tone may not work properly if a low-quality, tinted protective glass is pasted on the screen or if the light sensor is contaminated.

You can turn this off from the same screen settings menu where color temperature is adjusted, and there's usually a "Color Adaptation" or "True Tone" switch, and once you turn it off, the screen will return to the standard profile selected in the color scheme settings (Saturated, Standard, P3).

Sometimes users will “mock” the calibration themselves, trying to adjust “perfect white” to a specific light. If you are not a professional designer or photographer, it is better to use preset color profiles. From the Settings menu → Screen → Color scheme, select the “Standard” or “Saturated” option for resetting to factory settings.

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True Tone and adaptive color reproduction are software features, not matrix defects, designed to reduce eye fatigue, but can be turned off at any time.

Problems after updating MIUI or HyperOS

Often users experience color changes immediately after an operating system update. Xiaomi engineers periodically change the image processing algorithms in the MIUI and HyperOS shells. The new firmware version can activate more aggressive blue light filters by default or change the color reproduction profile to meet new eco-standards.

In addition, during the update process, the system files of the display settings can become corrupted or conflict with user data, which leads to the screen becoming dull and yellow, regardless of the position of the sliders on the menu. In some cases, a simple reset of the screen settings helps, but sometimes deeper intervention is required.

If the problem is caused by an update, check the About Phone section for new micro-updates. Often Xiaomi quickly releases patches that fix color rendering bugs that have leaked in the main release, and pay attention to third-party design themes.

Some Themes store themes can force the system to change the color of the interface, making the menu background yellowish. To rule out this factor, temporarily apply the standard theme "Classic" or "Basic" and check the result.

• 🔄 Configuration failure: Update may incorrectly apply old settings to new interface.
• 🎨 Change of profile: New OS version can choose the profile "Warm" instead of "Cold" by default».
• 📱 Topics conflict: Third-party themes may not fully support new screen controls.

Energy Saving Mode and Solar Mode

Another hidden culprit behind the yellow screen is energy saving: When the battery drops below a certain level (usually 20% or 10%), the smartphone automatically goes into savings mode. One way to extend the battery life is to reduce the brightness and change the color reproduction to a less energy-consuming one, which often means a yellow hue.

There is also a so-called Sunlight mode, which, on the contrary, should increase brightness and contrast in the sun. However, on some models of Redmi Note and Poco, there is a bug when the screen does not return normal colors when it leaves this mode, remaining in an incorrect state.

To check whether energy savings affect colors, you can artificially discharge the phone or turn on the mode manually in the notification curtain. If the battery turns yellow when you turn on, and when you turn off it turns (restores), then the problem lies in the energy saving algorithms.

To disable this effect, go to Settings → Battery → Power Saving Mode and select the “No Limits” option or turn off automatic theme and color change at low charge.

Hardware malfunctions: plume, matrix, oxidation

If all software methods failed and the screen remains yellow even after a full Hard Reset, there is likely a hardware problem. The most common cause is a display plume moving away from the board or damaging it, which can occur after a fall, impact, or simply due to vibration during prolonged use.

Another major cause is the degradation of the matrix itself, and in OLED screens, organic LEDs burn out over time, and if yellowness is spotty or uneven (for example, the bottom of the screen is yellower than the top), it's a sign of blue subpixels burning out, and it's irreversible.

⚠️ Warning: If the phone has recently been in water or in a high humidity environment, the yellowness of the screen may be a sign of oxidation of the backlight contacts.

You can easily diagnose a plume problem by tapping the frame of the screen in different places (especially the top where the plume is going), if the image starts to ripple, change colors or flicker, then the contact is broken, self-repairing in this case requires disassembly skills and tools.

Radical methods: Resetting and flashing

When the software failure is so deep that standard settings don’t help, the last software method is a complete factory reset, which will remove all data from the phone, so make sure to back up important files to the cloud or computer before starting the procedure.

You can reset via Settings menu → About phone → Settings reset → Wipe all data. If the phone is not turned on or the menu is not available, you can use Recovery mode: press the Volume Up + Power button and select Wipe Data.

If even after resetting and clean installation (without restoring backup settings) the screen is yellow, there is a 99% probability that the problem is hardware-based, in which case the software methods are powerless and a diagnosis is required at the service center.

Sometimes flashing the device through the computer using the Mi Flash Tool helps, which allows you to install a clean global version of the firmware, eliminating errors in regional assemblies. However, for the average user, this method carries the risk of “bricking” the device if you do not follow the instructions strictly.

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