Replacement of glass on Xiaomi Redmi: detailed instructions with photos and expert advice

Broken glass on Xiaomi Redmi is one of the most common problems among smartphone owners of this line. Even a minor crack can eventually lead to a complete failure of the display, dust entering the case or incorrect operation of the sensor. The service center will charge from 3,000 to 8,000 rubles (depending on the model), but with patience and minimal skills, you can save by performing the repair yourself.

In this article, we will go through the process in detail, from the selection of the original glass to the final assembly, you will learn what tools you will need, how to avoid typical errors (for example, damage to plumes or detachment of glue), and how replacement differs on Redmi Note 12, Redmi 10 or Redmi 9 models.

⚠️ Important: If your smartphone is warranty-free, self-replacement of glass will cancel it.

Diagnostics of damage: when only glass can be replaced, and when a full display module is needed

Before ordering parts, determine the scope of the problem. Glass on Xiaomi Redmi can be damaged in various ways:

• 🔍 Shallow scratches or small cracks – in this case, it is enough to replace only the external glass (if the matrix and touchscreen are not damaged).
• 💥 Deep cracks with wiring on the screen, most likely damaged matrix or plumes, will require replacement of the entire display module.
• 🩸 Bleeding pixels or stripes are a sign of damage to the matrix.
• 📱 Part of the touchscreen is not working, maybe the sensory layer is damaged.

To check the performance of the matrix, connect the smartphone to a computer or TV through HDMI-Adapter (if the model supports Miracast) If the image is transmitted without distortion, the only problem is the glass. If the artifacts remain, you have to change the entire display.

Also pay attention to OLED-screens (installed, for example, in the Redmi Note 11 Pro)+ or Redmi K50). They have a glass bonded to the matrix, so replacing only the glass is technically possible, but it's extremely complex and often leads to image defects. OLED-Displays are buying a full module.

2 Glass Choice: Original vs. Analogue, Which is Best for Xiaomi Redmi

The quality of the spare part depends not only on the appearance, but also on the durability of the repair, and there are three types of glass for Xiaomi Redmi on the market:

🔎 How to check originality? original glass for Xiaomi Redmi has:

• 🏷️ Serial number and Xiaomi logo sticker on the inside.
• 📏 Accurate match with the original display in size and location of the speakers/camera holes.
• 🧲 Magnetic screen (on models with support) NFC).

🛒 Where to buy? Secure place to order:

• 🌍 AliExpress (stores with a rating above 98% and reviews with photos).
• 🛠️ Beru or Ozon (Look for Guaranteeed Sellers).
• 🏢 Local service centers (sometimes sell leftovers) OEM-spare parts).

💡

Before buying, check the exact model of your Redmi (for example, the Redmi Note 12 4G and Redmi Note 12 5G have different displays!). The model can be found in the settings along the Settings path → About Phone → Model or on the sticker under the battery.

3. Tools required: what will be needed to replace glass

For a self-replacement of glass on Xiaomi Redmi, prepare the following set of tools:

Suction cups (2 pcs, diameter 3-5 cm)|Plastic mediators or shoulder blades (set)|Hair dryer construction or thermo-air station|Tweezers (thin, curved)|Screwdrivers (cross, flat, T3–T5)|Scalpel or stationery knife|Clay. B-7000 or LOCA (glass-fix)|Isopropyl alcohol (90%+) and napkins without pile|Nitrile gloves (imprint protection)|Loop or magnifying glass (to check plumes)-->

⚠️ Warning: Do not use metal blades - they can damage plumes or body! The best option is plastic mediators with a thickness of 0.1-0.2 mm.

🔥 Pro thermophene: The heating temperature should be in the range of 60-80°C. Too hot air can deform the plastic case or damage the battery. If the hair dryer is not available, you can use a household hair dryer, but you need to keep it at a distance of 10-15 cm and constantly move it so as not to overheat one area.

💡 Advice on glue: For Xiaomi Redmi it is better to use glue LOCA (It's a liquid optical adhesive -- it's more transparent and durable, but it's a skill-based application. 3M 9448A (budget-friendly).

4. Step-by-step instructions: how to remove old glass from Xiaomi Redmi

This is the most important step, and if you do something sloppy, you can damage the plumes of the display or the matrix.

1. Turn off the phone and remove it. SIM-If the battery is removable, remove it (on Redmi models) 4X, Redmi 5A older).
2. Heat the body with a hair dryer around the screen for 3-5 minutes. The goal is to soften the glue. Start at the corners where the glass usually holds tighter.
3. Suction cups lift the glass: 🧲 Stick the suction cup to the bottom of the screen (where the speaker is usually located). 🔧 Carefully pull up, while poking glass with a plastic blade. ⚠️ Do not put too much effort – if the glass does not lend itself, warm up for another 1-2 minutes.

Separate the glass from the matrix

• 🔪 After a gap appears, insert a plastic spatula into it and slowly lead along the edge.
• 🧩 In the models with OLED-screen (e.g. Redmi) K40) The matrix is thinner – act extremely carefully!
• Remove glue residues from the frame and matrix with isopropyl alcohol and a napkin. Don't use acetone - it can damage the coating!

📌 Frequent mistakes at this stage:

• 🔥 Overheating of the case – can melt plastic clips or damage the battery.
• 🔪 Using metal tools – leads to scratches on the matrix.
• 💔 Sharp separation of glass - the risk of tearing plumes of a touchscreen or display.

5. Installation of new glass: glue, alignment and fixation

Now we move on to installing a new glass, and this process requires precision, so that the slightest shift will result in uneven gaps or a broken touchscreen.

1. Applying glue: 🖌️ If you use LOCA, apply it in a thin layer around the perimeter of the matrix (without touching the central part!). 📏 For double-sided tape, cut the strips by the size of the frame and glue them, avoiding overlapping.
2. Installation of glass: 🔍 Combine the speaker, camera and sensor holes. Start at the top, then gently press the glass across the area. 📐 Use a device for alignment (you can make a book and a rod) or put a load on top (for example, a heavy book) for 10-15 minutes.

Pressurization check

• 🕵️ Light a flashlight around the edges - if you see the gaps, you need to add glue.
• 💧 Wipe the screen with alcohol to remove prints and glue residues.

⚠️ Attention: If the glass is pressed after installation, it's not enough glue. In this case, you'll have to reglue. LOCA use UV-lamp (365 nm) for polymerization - this will accelerate the gluing process to 2-3 minutes.

Critical! On Redmi Note 10 Pros and later, glass often comes with a frame holder, so if you only bought glass without a frame, you'll have to glue it directly onto the matrix, which requires professional skills, and then you'd better go to the service.

6. Build the phone and check the health

Once the glass is installed, you just have to assemble the phone and test it.

Make sure all plumes are connected (display, touchscreen, speaker)|Check the sensitivity of the touch screen (test in Settings) → Screen. → Sensor test)|Turn on your phone and check the image (no broken pixels or stripes)|Check the speaker and microphone|Make sure the on/volume buttons are working|Check charging (connect the cable and make sure the phone detects charging)-->

🔧 If the touchscreen doesn't work:

• 🔌 Reconnect the touchscreen plume (it may not be fully inserted into the connector).
• 🔄 Reset the screen settings: Settings → System system → Resetting settings → Resetting screen settings.
• 📱 If the problem remains, it is possible that the plume or touchscreen controller is damaged (diagnosis is required).

🎯 Touchscreen calibration: Some models (Redmi 8, Redmi 9) may require calibration after glass replacement:

1. Download the Touchscreen Calibration app.
2. Follow the instructions on the screen (usually click on a few dots).
3. Reboot the phone.

💡

If the phone overheats or discharges quickly after changing the glass, the battery plume or power controller is likely damaged, and this requires professional diagnosis!

7.Typical problems after glass replacement and how to avoid them

Even with a careful repair, there can be problems, and let's look at the most common ones and how to fix them:

🛠️ If nothing works: Perhaps the problem is not the glass, but the display controller (chip on the motherboard). In this case, you need a soldering station and experience with microelectronics.

FAQ: Frequent questions about replacing glass with Xiaomi Redmi