Replacing Glass on Xiaomi Phone: A Complete Guide from Disassembly to Testing

Broken glass on Xiaomi is one of the most common problems faced by smartphone owners of this brand. Even a minor crack can eventually turn into a web of faults, interfere with the use of the sensor or completely make the screen unreadable. The service center will charge from 3,000 to 10,000 rubles depending on the model, but with the patience and the right tools, you can do the procedure yourself – saving up to 70% of the cost.

In this article, we will go into detail about the entire process, from diagnosing damage and selecting a new glass to final assembly and testing, focusing on typical beginner errors that lead to repeated breakages (for example, the wrong temperature when gluing or ignoring the inspection of plumes), and you will find a comparison table of glass for popular Xiaomi models (from Redmi Note 10 to Xiaomi 13 Ultra) and tips for choosing adhesives.

We warn you beforehand: the procedure requires care. If you have never disassembled a smartphone, practice on an old device or watch video disassembly of a particular model, each Xiaomi device has its own nuances of mounting a display module. POCO F3 The battery plume blocks access to the screen connector, and in Redmi 9A The glass is especially strong due to the budget assembly.

1.Diagnosis of damage: when it is possible to do only by replacing glass

Not every glass damage requires a complete replacement of the display module (which costs 3-5 times more), and here are the key signs that it is enough to change only the protective glass:

• 🔍 Cracks only on the outer layer - if a worker is visible below them OLED/AMOLED-screen without artifacts, the matrix is intact.
• 🖱️ Touch Sensor – Check all areas of the screen (for example, using the test ##6484## for Xiaomi).
• 🎨 Colors and backlights without distortion – no vertical/horizontal stripes, broken pixels or flickering.

If the screen shows a ripple when pressed, part of the display does not glow or the sensor fails in certain areas - most likely, the matrix or plume is damaged. + matrix + sensor).

⚠️ Note: On Xiaomi models with AMOLED-screens (e.g. Xiaomi) 12T or Redmi K50) Even small cracks in glass can eventually cause the matrix to burn due to moisture, and if you don't replace the glass in 2-3 weeks, repairs will cost more.

For accurate diagnosis, use a magnifying glass and flashlight: illuminate the screen at an angle - this is how you see microcracks on the matrix. Also check the Always On Display (if any): if the time / notifications are displayed correctly, the matrix is likely intact.

2. Choice of glass: OEM vs. aftermarket, which is best for Xiaomi

There are three types of glass for Xiaomi:

1. OEM (Original) – manufactured by the same factories as Xiaomi, but sold as spare parts. Perfect in size and holes for the speaker / sensors).
2. Aftermarket premium (such as Tianma or Tianma) BOE) — They're quality, often indistinguishable from the original, 30 to 40 percent cheaper. OEM.
3. Budget replicas are cheap glass (from 500 rubles), but with the risk of poor sensor sensitivity or color distortion.

For most Xiaomi models, the best choice is aftermarket premium, which undergo factory calibration and have oleophobic coating (fingerprints are easier to erase), except for flagships like Xiaomi 13 Pro, where it is better to take a pickup. OEM Due to the complex structure of the screen (for example, LTPO AMOLED adaptively).

When buying, check:

• 📏 Glass thickness - must match the original (indicated in the characteristics of the model).
• 🔧 Availability of holes for the front camera, speaker and sensors.
• 📦 Set – in good sets there is glue, shoulder blades and dust-retardant stickers.

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Before buying glass, check its article on the manufacturer’s website (e.g. Tianma or Tianma). BOE). Counterfeits are often sold under the guise of premium, but have the worst light transmission (up to 15% worse than the original).

3. Tools required: what to buy to replace glass

To replace the glass with Xiaomi, you will need a specialized set of tools.

• 🔥 Dryer or infrared station - for softening the glue (optimum temperature: 80-90)°C).
• 🪛 Plastic blades (0.1–0.2 mm) – metal blades can scratch the frame.
• 🧲 Suction cups – for raising glass after heating (diameter 4-5 cm).
• 🧴 Clay — B-7000 (universal LOCA (glass-glass 3D-edge).
• 🧻 Lickless wipes and isopropyl alcohol (99%) - for cleaning.
• 🔍 Loop or microscope – to check plumes for microcracks.

For models with curved screens (for example, Xiaomi Mi 11 Ultra) additionally require:

• 📏 Template for cutting glue - so as not to block the speaker's holes.
• 💡 UV-lamp - if glue is used LOCA (It solidifies under ultraviolet light).

The cost of a full set of tools — from 1,500 to 3,000 rubles. If you plan to repair smartphones regularly, it makes sense to buy an infrared station (from 5,000 rubles) — it evenly heats the screen, reducing the risk of damage to the matrix.

⚠️ Warning: Never use a household dryer instead of a dedicated one! The hot air flow in household models is uneven, which can lead to overheating of battery or processor plumes (risk of fire!). The minimum safe temperature for disassembly is 70.°C, maximum 110°C.

Remove all metal objects (risk of short circuit)|Remove the antistatic mat|Connect a bright lamp (minimum 500 lumens)|Prepare containers for screws (by size)|Turn off the phone and remove it SIM-map-->

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

The process of dismantling the glass is the most critical step, and errors here can lead to damage to the matrix or the plumes.

1. Turn off the phone and remove the back cover (if it is removable, as on the phone). POCO M3). Remove the battery if possible without risk of damage.
2. Plug a protective film on the frame of the phone - this will prevent scratches from the shoulder blades.
3. Heat the screen with a hair dryer (temperature 80-90)°C) for 2-3 minutes, holding it at a distance of 3-5 cm Move the hair dryer in circular movements so that the glue softens evenly.
4. Put a blade on the glass from any angle (usually the bottom right corner) and if the glass doesn't work, warm up the area for another 30 seconds.
5. Use a suction cup to slowly lift the glass. Don't pull it too hard - there may be plumes underneath!
6. Disconnect the display and sensor plumes (if they are glued to glass). In Xiaomi models, they are usually attached to the latches - carefully tuck them into the shoulder blade.

On models with a glued matrix and glass (for example, Redmi Note 8 Pro) the process is more complicated: you have to separate the glass from the matrix with a thread for cutting glue (sold in remixes).°C and work in gloves - glass shards can hurt your hands.

After the glass is removed:

• 🧹 Remove glue residues from the frame and matrix using isopropyl alcohol.
• 🔍 Check the matrix for cracks (especially in corners).
• 📱 Test the sensor – connect the matrix to the board and check the response to touch (you can use the Touch Screen Test application).

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

Before installing a new glass, prepare the surface:

1. Clean the matrix and frame of dust with a sticky roller (or scotch).
2. Apply a thin layer of glue (B-7000 or LOCA) It's on the phone frame. LOCA Use a dispenser – excess glue will lead to an “oil effect” under the glass.
3. Carefully place the new glass, combining the camera holes and the speaker. Press on the center of the glass with effort. ~2 kg for 10 seconds.

For glass with 3D-The edges (for example, on the Xiaomi Mi 11):

• 🎨 Put the glue on. LOCA glass, not on the frame - so it is evenly distributed along the curves.
• 💡 After installation, illuminate the glass UV-lamp (365 nm) for 2-3 minutes for polymerization of glue.

After bonding:

• 📦 Place the phone under a press (for example, between two books) for 1-2 hours.
• 🔋 Do not turn on your phone for 4-6 hours – the glue should dry completely.
• 🧪 Check the leakproofness: hold your phone to a bright lamp in a dark room. If you see light on the edges, there are gaps that you need to repaint.

⚠️ Note: On models with built-in in-screen fingerprint scanner (such as Xiaomi 12 Pro) after glass replacement, you may need to recalibrate the sensor. → Passwords and security → Fingerprints and follow the instructions.

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The temperature during gluing should be not lower than 20°C. In a cold room glue B-7000 It can crystallize, which will lead to cloudy spots under the glass.

6. Phone assembly and testing

After drying the glue, collect the phone in reverse order:

1. Connect the display and sensor plumes to the motherboard. Make sure the latches are closed before you click.
2. Install the back cover (if removed). Screw the screws cross-cross to avoid distortion.
3. Put it in. SIM-card and battery (if removed).

Before the final assembly, be sure to test:

• 📱 Sensor – Use the Display Tester app (check multi-touch and edge zones).
• 🎨 Colors and backlights – turn on the white screen at maximum brightness and check for uniformity.
• 🔊 Speaker and microphone – call another phone or record a voice message.
• 🔋 Charging – connect the charger and make sure the charge indicator is displayed correctly.

If after the glass replacement artifacts appeared on the screen (strips, flickering), the reason may be:

• 🔌 Bad contact plume - reconnect it.
• 🌡️ Overheating matrix during dismantling - let the phone cool for 1-2 hours.
• 💧 If you get moisture under the glass - disassemble the phone and dry with a hair dryer (temperature not higher than 50).°C).

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If the sensor becomes less sensitive after the glass is replaced, try calibrating it through the engineering menu. To do this, type the code ##36446337## and select Touch Screen Calibration (not working on all models).

7.Typical mistakes and how to avoid them

Even experienced craftsmen sometimes make mistakes when replacing glass.

Another common problem is that the sensor is broken after it's replaced.

• 🔌 Sensor plume damaged - check it for microcracks under the magnifying glass.
• 📱 Incompatible glass – some aftermarket glasses require sensor firmware (relevant for Xiaomi on MediaTek).
• 🔋 Weak contact connector - try to clean the contacts with alcohol.

If the phone does not turn on after changing the glass, check:

• 🔌 Battery connection – sometimes the plume leaves when assembled.
• 🔥 CPU overheating - if the hair dryer was too close to the board.
• 📱 Short circuit – check the fee for the presence of foreign metal particles.

8.Alternative methods: when self-replacement is not suitable

In some cases, it is impossible or impractical to replace the glass yourself:

• 🔧 Complex models, like the Xiaomi Mix Fold 2 with a folding screen, require special equipment to calibrate the loop.
• 💰 High cost of glass for Xiaomi 13 Ultra OEM-glass ~8,000 rubles and the risk of error is too high.
• ⚡ Warranty repair - if the phone is warranty, self-disassembly will cancel it.

In such cases, it is better to contact the service: Average prices for glass replacement in Moscow (2026):

• Redmi Note 10/11 — 1 500–2 500 ruble.
• POCO X3/X4 — 2 000–3 000 ruble.
• Xiaomi 12/13 series — 4 000–6 000 ruble.
• Xiaomi Mix 4/Fold — from 10 000 ruble.

When choosing a service, pay attention to:

• 📝 Guarantee for work – at least 3 months.
• 🔧 Parts used – ask for glass certificates.
• 📸 Photo report – good services record every stage of repair.

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If you doubt your abilities, but want to save money, consider buying a used display module on Avito or AliExpress (price is lower by 30–50%). The main thing is to check the reviews of the seller and ask for a video of the screen before buying.

FAQ: Frequent questions about replacing glass with Xiaomi