Screen calibration Xiaomi Redmi 4A: Complete guide with photos and tips

Xiaomi Redmi screen 4A — It's not just a display, it's a key element of interaction with the device, and eventually even on budget smartphones like the Redmi. 4A You can have problems, like distorted colors, sensor malfunction, or uncomfortable brightness, and calibration helps you get back a comfortable display, improve touchscreen responsiveness, and extend the life of the display.

Many users mistakenly believe that the screen is only for professionals or after repairs. 3-6 It's good for everyone, especially if you watch videos, play games, or work with graphics. In this article, we'll look at all the ways from standard settings. MIUI Up to hidden engineering menus and third-party apps.

It's important to understand: Redmi 4A fitted IPS-resolution-matrix 720×1280, And it's nuanced, because of the budget build, for example, some devices have uneven lighting around the edges of the screen (the cloud effect), which is a hardware feature, and the software setting is powerless. But the color balance, contrast and sensitivity of the sensor can be adjusted.

Before you start, check the version. MIUI on his Redmi 4A. The instructions in the article are relevant for firmware MIUI 9-14 (including global and Chinese versions) If you have custom firmware (like LineageOS), some menu items may differ.

Preparation for calibration: what to do in advance

Calibration is not only about changing menu settings, it's about preparing the device. Incorrect actions can cause display failures or even damage to the matrix.

✅ Battery charge. Make sure it's at least 50 percent charge level. At low charge, the system can interrupt the calibration process (especially if you use an engineering menu), which will cause malfunctions.

✅ Screen temperature.Redmi 4A It's prone to overheating when you're under a lot of stress. If the display is hot, let it cool for 10 to 15 minutes, and it affects color accuracy.

✅ Screen cleanliness. Fat spots or bubbles can distort color perception!).

✅ Reset your display settings. If you've experimented with settings before, bring them back to the factory:

Settings → Display → Additional → Resetting screen settings

Battery charge >50%

Screen clean and dry

The temperature of the device is normal

Backup of important data is made

Power-saving modes are turned off-->

🔹 Important point: if you use night mode (Settings) → Display. → Night mode, turn it off before calibration. This mode distorts the real colors of the screen, and the settings will be inaccurate.

⚠️ Attention: If your Redmi is 4A If you fall or you have heavy objects pressed on the screen, calibration may not help, and in such cases, the matrix plumes are often damaged, and hardware repair is required.

2. Standard calibration through MIUI settings

Xiaomi has provided users with Redmi 4A These are basic tools for screen customization, which are not as flexible as the flagship models, but they cover 80 percent of the needs:

📱 Brightness and adaptive lighting:

• 🌞 Manual brightness: move the slider to Settings → Display. → Brightness to a comfortable level. 4A 40-60% in daylight.
• 🔄 Adaptive brightness: turn it on if you want your smartphone to automatically adjust to the lights. 4A less accurate.

🎨 Color profile:

• 🖌️ Standard: Balance between saturation and naturalness (recommended for most tasks).
• 🌈 Saturated: Enhanced colors, but can tire the eyes with prolonged use.
• 👁️ Sparing: Reduces blue light, is useful for reading at night.

📏 Font size and scale:

B Settings → Display. → Text size can be increased to 120%, but on Redmi 4A This sometimes leads to trimming of interface elements. 100-110 is optimal%.

🔧 Hidden Color Temperature Settings:

In some versions MIUI There's an undocumented option:

Settings → Display → Additional → Color Temperature

Move the slider to the cold tones (6500K) for writing or for warm (4000K) For comfortable video viewing in the evening.

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If the color profile changes, the screen becomes "soapy", return the settings to the factory and restart the smartphone. This will reset the graphics driver cache.

Sensor calibration (touchscreen)

If the Redmi screen 4A It doesn't respond well to touch, skips taps, or opens apps spontaneously, and it can be a problem with calibration of the sensor, which is especially true after changing the display or updating the firmware.

🛠️ Method 1: through the engineering menu (works on most versions) MIUI):

1. Open the Phone app.
2. Enter the combination: ##36446337## (code for sensor test).
3. Follow the instructions on the screen: swipe your finger along the lines and points indicated.
4. After completion, restart the smartphone.

🛠️ Method 2: Reset the sensor settings (if the first method did not help):

Settings → System → Additional → Resetting settings → Resetting sensor settings

⚠️ What to do if the sensor is not calibrated?

• 🔌 Check if the touchscreen plume is damaged (a common problem after falls).
• 📱 Update the firmware to the latest version – in new builds MIUI sensor bugs fixed.
• 🛒 If nothing helps, you may need to replace the display module (cost for Redmi). 4A — 1500 ₽).

⚠️ Warning: After calibrating the sensor, do not install rounded edge protective glasses – they can create “dead zones” around the perimeter of the screen where touches are not recognized.

4. Advanced calibration with third-party applications

Standard settings MIUI There are limited, but there are applications that allow you to fine-tune the screen, and the main thing is to choose proven utilities so that you don't harm the system.

📌 Best Calibration Applications:

• 🎛️ Screen Balance – adjusting color temperature increments 100K.
• 🖥️ Display Calibration – contrast and brightness tests.
• 🔍 Touchscreen Calibration – an alternative to the engineering menu for calibrating the sensor.

⚙️ How to use Screen Balance:

1. Download the app from Google Play (check that the version is compatible with Android 6.0, which runs Redmi). 4A).
2. Start and select Custom mode.
3. Move the Red, Green, Blue sliders to remove the color bias.
4. Save the profile and apply it.

📊 Testing of results:

After calibration, check the screen on special images:

• 🖼️ Gradient of gray - there should be smooth transitions without stripes.
• 🟥🟩🟦 Pure colors (red, green, blue) - without impurities of other shades.
• ⚫⚪ Black and white test – black should be deep, without gray.

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The side of the calibration application requires rights ADB Or root for full-time work. 4A their capabilities are limited.

5. Frequent problems after calibration and their solution

Even if you do everything according to the instructions, there may be problems, and let's look at the typical situations and how to fix them.

🔴 Problem: The screen is too dark or bright

🔹 Reason: Failure in the settings of the display driver.

🔹 Decision:

1. Reboot your smartphone.
2. Reset the screen settings to factory (Settings) → Display. → Additionally. → Reset).
3. If it doesn’t help, update the firmware through Settings. → The phone. → Updating the system.

🟡 Problem: Colors look unnatural (skin green, sky purple)

🔹 Reason: Wrong color profile or calibration failure.

🔹 Decision:

• Return to the Standard profile in the display settings.
• If you used a third-party application, remove it and restart the device.
• Check if the theme is set with aggressive colors (Settings) → Topics).

🔵 Problem: The sensor is running late or misses touches

🔹 Cause: Incorrect calibration or shell conflict.

🔹 Decision:

1. Calibrate the sensor again (see Section 3).
2. Turn off Charge Saving mode – it reduces the frequency of the sensor survey.
3. If the problem persists, try rolling back the firmware to the previous version (via MIUI bootloader).

⚪ Problem: Artifacts (strips, flickering) appeared)

🔹 Cause: Hardware defect of a matrix or plume.

🔹 Decision:

Unfortunately, there's no software to fix this. 4A Replacement of the display module costs 1800-2500 ₽ (depending on the region).

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If after calibration the screen started to flicker at low brightness, try turning off the Automatic Contrast Adjustment function in the display settings.

6. How to keep calibration results for a long time

Calibration is not a one-time action, so to keep its effect longer, follow these tips:

🔄 Regular maintenance:

• 📅 Check the brightness and color profile once a month.
• 🔄 After major updates MIUI recalibrate.

🛡️ Screen protection:

• 📱 Use matte protective glasses - they distort colors less than glossy ones.
• ☀️ Avoid direct sunlight on the screen – this accelerates the degradation of the matrix.

🔋 Optimization of energy consumption:

• 🔌 Turn off Adaptive Brightness if it is not operating in a stable manner.
• ⚡ Enable the Dark Theme (Settings) → Display. → Dark theme – this reduces the load on the lighting.

📦 Backup settings:

If you have achieved the perfect calibration, keep it:

1. Take screenshots of the current screen settings.
2. Write down the values of color temperature and brightness.
3. Use the app. MIUI Backup to save the display profile.

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On the Redmi. 4A It is not recommended to use Reading or Eye Comfort modes constantly - they distort color reproduction and can lead to the eyes getting used to the wrong colors.

FAQ: Answers to Frequent Questions