Replacement of the display on Xiaomi Redmi Note 4: a detailed guide with nuances

Xiaomi Redmi Note 4 is one of the most popular smartphones of 2017, but even its rugged body does not save from falls and cracked screens. If your display is covered with a web of cracks, stopped responding to touches or completely died out, do not rush to carry the phone into the service: you can make a replacement yourself, saving up to 70% of the cost of repair. In this article, step-by-step photo instructions, tips for choosing spare parts and common mistakes that beginners make.

It's important to understand that replacing the display with the Redmi Note 4 (codenamed mido) has its own peculiarities. For example, in this model, the touchscreen and the matrix are glued together into a single module, so you can't replace only the glass - you have to buy the entire display unit. In addition, after replacing, you may need to calibrate the sensor and check the tightness to avoid dust falling under the screen.

If you've never taken a smartphone apart, start by looking at video reviews of the process (we'll pick the best ones at the end of the article), and for experienced craftsmen, we've prepared a module compatibility table and ways to diagnose malfunctions before disassembly.

Preparation: tools and spare parts

Before you start replacing, make sure you have everything you need, poor-quality tools or cheap parts can damage the board or connectors, and here's the minimum set:

• 🔧 Plastic blades (2-3 pieces) to separate the body. Metal blades can scratch the frame.
• 🔨 Cross screwdriver (size) PH00 or PH0) hull-rotor.
• 🧲 Magnetic mat or screw container – easy to lose!
• 🔥 Hair dryer or thermoplatform for softening glue (temperature 60–80)°C).
• 📱 New display module with glue tape (original or high-quality analogue).
• 🧴 Isopropyl alcohol (90%+) clean-up.

The parts are ambiguous. Xiaomi’s original displays are expensive (from 3,500). ₽), But they guarantee 100% compatibility, and the alternative is modules from proven manufacturers like Tianma or other products. BOE, Avoid "no-name" screens that are priced below 1,500. ₽ — They often have poor color reproduction or a broken touchscreen.

Tips for choosing a module: Before buying, check to have a glue tape in the kit (usually). 3M Without it, the screen will walk on the press, and the dust will quickly get inside. Also check with the seller whether the touchscreen will be stitched to the firmware of your Redmi Note 4 - some cheap modules require additional adjustment through the device. ADB.

Diagnosis of malfunction: is it the display’s fault?

Before disassembling the phone, make sure that the problem is in the screen.

• 💥 Cracks or broken glass with sensor impairment.
• 🖥️ Artifacts on the matrix: vertical stripes, flickering, broken pixels.
• ☠️ The screen is not turned on, but the phone vibrates / sounds are there (check the flashlight backlight with a flashlight!).

If the screen does not respond to touch, but the image is there, the problem may be:

• 🔌 Touchscreen plume (frambled or left contact).
• 📱 Firmware (resetting to factory settings sometimes helps).
• 🔋 Battery (if the phone turns off when you press the screen).

To check the plume, connect the phone to the PC and execute the command:

adb shell dumpsys input

If there are lines with errors in the output touch_device_not_found, The problem is most likely in the contacts or the module itself.

The Xiaomi Redmi Note 4 is a step-by-step disassembly

Now, to the most critical stage, turn off the phone and remove it. SIM-A memory card. Work on a clean, well-lit surface.

1. Removing the back cover: heat the tail dryer on the edge of the body (do not direct air flow to the battery!). Carefully shovel the lower edge and lead it around the perimeter. The cover is held on the latches - do not make excessive efforts!
2. Battery shutdown: Once you take the lid off, you'll see the battery. Never disassemble a phone with a battery connected, which can short circuit! Unplug the battery plume with a flat blade.
3. Motherboard removal: unscrew 10 screws (size and position, see photo below) and gently raise the fee. Don't pull the plumes!
4. Disconnect the display: heat the screen around the perimeter, then squirt the module with a spatula. Be careful - there are plumes under the screen!

At this stage, many people make critical mistakes:

⚠️ Warning: If you hear a crackle when you take off the screen, it's likely that the touchscreen plume has broken, and you'll need to replace the entire module, even if the matrix is intact.

Photo of the location of screws and plumes:

Installation of a new display and assembly

Before installing a new module, compare it to the old one: the connectors, screw holes and speaker/sensor cutouts should match. If you bought a non-original screen, check:

• 🎨 Color rendering (the original usually cooler tones).
• 👆 Touchscreen sensitivity (try gestures on the menu).
• 🔦 Brightness of backlight (cheap modules are often dim).

Installation process:

1. Stick the new tape around the perimeter of the screen (do not remove the protective film from the outside!).
2. Connect the plumes to the motherboard (first touchscreen, then display).
3. Put the charge in place and twist the screws cross-cross to avoid distortions.
4. Connect the battery and check the performance before final assembly.

If the screen does not work after assembly:

• Check if the plumes are sitting tightly (sometimes they fall out when the board is turned over).
• Make sure the screws are not pulled over - this can cause a circuit.
• Try resetting your settings via Recovery (hold on Power) + Volume Up when switched on).

💡

If the new screen is yellowish, try calibrating the colors in the engineering menu. To do this, type the code ##6484## and select Display.

Calibration of the touchscreen and checking the tightness

After replacing the Redmi Note 4 display, you may need to calibrate the sensor, especially if you have installed a non-original module.

• 🎯 Touches are recorded with a bias (press in one place, and work in another).
• ⏱️ Delays in scrolling or entering text.
• 🚫 Some gestures don’t work (like swiping down for the notification bar).

For calibration:

1. Download the Touchscreen Calibration app from Google Play.
2. Follow the instructions on the screen (usually click on the target in the corners of the display).
3. Reboot the phone.

Also check the tightness of the body:

• Light the flashlight on the edges of the screen - if you see the light, then the glue tape does not fit well.
• Blow on the screen from the side – if you feel the movement of air, additional sealing is required.

⚠️ Warning: If the screen starts to sweat from the inside after the replacement, it's a sign of moisture getting in. Immediately disassemble the phone and dry it in rice or silica gel for 24 hours.

Comparison of original and non-original display

To make it easier for you to choose a spare part, we have compiled a table with key differences:

If you choose between the original and the analog, focus on the purpose of use:

• 📸 For photos and videos, the original is better – it has a more accurate color reproduction.
• 🎮 For games, a high-quality analogue is suitable (for example, from Tianma).
• 💰 If the budget is limited, take an analogue, but be prepared for possible problems with the touch screen.

Frequent Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when replacing the Redmi Note 4 display.

1. Damage to the battery plume when disconnected. Always use a plastic blade and plug the connector on the side instead of the top.
2. Tugging of the motherboard screws, which can lead to cracks in the board or detachment of the contacts.
3. Ignore pre-assembly checks. Always test the new screen for performance before you close the case!
4. Using superglue instead of glue tape would make the next repair almost impossible.
5. Failure to comply with the temperature regime when heating the glue. Too high temperature (above 90)°C. may damage the battery.

If the screen is working after the replacement, but new problems have appeared (for example, self-pressing or flickering), the reasons may be as follows:

• 🔌 Bad contact of the display plume (try reconnecting).
• 🔋 Motherboard malfunction (for example, a burnt backlight driver).
• 📱 Firmware conflict with new touchscreen (solved by flashing through Fastboot).

💡

If after replacing the display, the phone stopped charging, check if you damaged the connector. USB Type-C in disassembly. This is a common problem in careless motherboard removal.

Video Instructions and Useful Resources

For clarity, we recommend watching the following videos (links are relevant for 2026):

• 🎥 Redmi Note 4 Disassembly with Explanations (Xiaomi Repair Channel").
• 🎥 Replacement of the display in 15 minutes (detailed review of tools).
• 🎥 Calibration of the touch screen after replacement (Step-by-step with settings).

Also useful resources:

• 🔧 Firmware for Redmi Note 4 (if the screen does not work correctly after replacement).
• 🛠️ Forum 4PDA (Xiaomi repair section).

If you're not sure about your abilities, contact the service center.The average cost of replacing the Redmi Note 4 display in 2026:

• 🏠 In the official service Xiaomi: 4000-6000 ₽ (spare-part).
• 🔧 In private workshops: 2,500–4,000 ₽ (depends on the quality of the screen).

FAQ: Answers to Frequent Questions