Touch screen is one of the most vulnerable parts of Xiaomi's smartphone. Falling from a height, hitting or even pressing hard can lead to cracks, "dead zones" or complete failure of the touch screen, POCO Mi stopped responding to touch, do not rush to carry it to the service center: you can replace the sensor yourself, saving up to 70% of the cost of repair.
In this article, we will analyze the whole process from A to Z: how to diagnose a malfunction, pick up an original spare part, carefully disassemble the phone and install a new module. You will learn what tools you will need, how to avoid typical errors (for example, damage to the battery plume) and what to do if the screen does not work after replacing. 12T, Redmi Note 11 Pro and Redmi Note POCO F5, wherein the construction of the body has features.
It's important. AMOLED-The screen (for example, in Xiaomi 13 or Mix 4), the replacement process is more difficult because of the adhesive layer and the risk of damage to the matrix. For such cases, we will give separate recommendations.
How to know if you need a sensor, not a display
Before ordering parts, make sure that the problem is in the touch layer, not in the matrix itself or the plumes.
- 📱 The screen is on, the image is there, but does not respond to touch (or partially reacts).
- 🖱️ The cursor/touch jumps on their own without your exposure.
- 🔍 On the screen you can see cracks or stains, but the picture below them is displayed normally.
- 🔄 After restarting, the sensor works 1-2 minutes, then again “gluts».
If the image is completely missing (black screen, backlights are not turned on), the problem is more likely a matrix, a plume or a motherboard, in which case replacing one sensor will not help.
For accurate diagnosis, connect the phone to the computer through USB-Check the cable and see if the device is ADB (If the screen is not responding, but the PC is "seeing" the phone, the problem is precisely in the sensor. You can also call the phone - if the call is coming and the screen is not turning on, this may indicate damage to the backlight plume.
⚠️ Warning: If the sensor stops working after falling into the water, don't turn the phone on! First dry it completely in rice or silica gel for 24-48 hours. Turning on the wet device can cause short circuit and damage to the motherboard.
What tools will be needed to replace
To replace the sensor on Xiaomi, prepare the following set of tools. Without them, it is almost impossible to disassemble the phone without damage:
| Tool. | Appointment | Where to buy |
|---|---|---|
| Plastic shoulder blades (mediators) | For careful slinging of the body and disconnection of plumes | AliExpress, radio parts stores |
| Cross screwdriver PH00 or PH0 | For unscrewing the screws of the body (usually 5-7 pieces) | Any hardware store |
| Screen suction cup | Fixing the sensor when lifting (especially important for the AMOLED) | Phone repair kits |
| Thermistol or hairdryer | Heating the glue around the screen perimeter (temperature 60–80)°C) | Construction shops |
| Scotch or double-sided tape | Fixing of plumes and cables after replacement | Stationery stores |
In addition, it may be necessary to:
- 🧲 Magnetic mat – to avoid losing screws (in Xiaomi they are often small and the same).
- 🔍 Loop or magnifying glass - for inspection of plumes on microcracks.
- 🧴 Isopropyl alcohol (90%+) — oxidizing.
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Before disassembly, take a picture of the location of all screws and plumes - this will help to assemble the phone without unnecessary details after repair.
If you have a model with a glued screen (for example, Xiaomi) 11T or Redmi K50), buy glue extra B-7000 Or a special glue for displays, which you'll need to fix the new sensor, POCO M3) no glue required.
Where to buy a sensor for Xiaomi: original vs. analogue
Part quality is responsible for 90 percent of repair success, and Xiaomi has three types of sensors:
- Original (OEM) — Removed from donor phones, fully compatible, but expensive (3,000 to 8,000) ₽ model-wise).
- High quality copies are made in the same factories as the originals, but without the Xiaomi logo, priced 30-50% lower, quality is almost identical.
- Cheap analogues -- often married -- can work incorrectly with multi-touch or gestures. Priced from 800. ₽, But the risk of re-substitution is high.
Where to look:
- 🛒 AliExpress - a big choice but a long wait (2-4 weeks) Look for sellers rated 98%+ photo-reviewed.
- 🏬 Local spare parts stores - fast delivery, you can check before buying (for example, in Moscow - Chip and Deep, Repair Techno»).
- 🔧 Service centers – sometimes sell used originals after replacement under warranty.
Before buying, check:
- The exact name of the phone model (written under the battery or in the settings) → The phone. → Model).
- Screen type: IPS or AMOLED (specify the characteristics of the model).
- The presence of a hole under the speaker / camera – in some models (for example, Redmi Note 10 Pro) the sensor is assembled with a frame.
⚠️ Note: In Xiaomi models with ultrasonic fingerprint scanner (for example, Mi 11 Ultra), the sensor is assembled with the sensor. If you buy a regular touchscreen, the scanner will stop working!
How to distinguish the original sensor from a fake?
Step-by-step instructions for replacing the sensor
Start disassembling the phone only after you have completely turned off (remove the SIM card and memory card if you have them). Work on a clean desk with good lighting. Below is a universal instruction that is suitable for most Xiaomi models (except for models with a glued case, for example, Xiaomi). 12S).
Turn off the phone and remove it. SIM-map|Make a backup copy of the data (in case of an error)|Prepare the workplace: soft surface, good lighting|Check the completeness of the tools|Wear an antistatic bracelet (optional)
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Step 1: Removing the back cover
Most Xiaomi models have a plastic or glass back cover that is attached to latches and glue to remove it:
- Heat the edge of the body with a hair dryer (temperature 60–70)°C) within 1-2 minutes.
- Insert a plastic spatula into the gap between the lid and the frame (start with the corner next to the power button).
- Carefully drive the shoulder blade around the perimeter, snapping clips. Don't force - if the lid doesn't lend itself, warm it longer.
In models POCO X3 Redmi Note 9 cover can be mounted on screws under plugs - they must be pre-screwed.
Step 2: Shutting off the battery
Never use your phone if the battery is connected to the motherboard, which can short-circuit the battery.
- Find the battery plume (usually black, with the inscription) BATTERY).
- Tap it with a plastic spatula and gently disconnect it from the connector.
- Secure the plume with tape so it doesn't touch the contacts.
Step 3: Dismantling the old sensor
If the sensor is glued (AMOLED-screen):
- Heat the screen with a hair dryer (temperature 70–80)°C) 3-5 minutes.
- Stick the suction cup to the sensor and pull it up. If it doesn't, repeat the heat.
- After removing the sensor, remove the remains of the glue from the frame with alcohol.
If the sensor is on the latches (IPS-screens):
- Unscrew the screws around the perimeter of the screen.
- Disconnect the sensor plume (usually it is glued to the motherboard).
- Carefully lift the sensor, starting at the top edge.
Step 4: Installation of a new sensor
Before installation:
- 🧹 Clean the contacts on the motherboard with alcohol.
- 🔍 Check the integrity of the new sensor plume.
- 📏 Make sure the sensor connector matches the nest on the board.
For models with glued screen:
- Apply a thin layer of glue B-7000 perimeter.
- Carefully attach the sensor, combining the holes under the camera / speaker.
- Press the screen and remove the excess glue with a napkin.
For models with removable sensors:
- Connect the sensor plume to the motherboard.
- Secure the sensor with screws (do not pull!).
- Make sure the plume is not bent or stretched.
Step 5: Assembly of the phone
Collect the phone in reverse order:
- Put the battery on.
- Set the back cover by snapping clips around the perimeter.
- Then, put the sleeves in the back.
- Turn on your phone and check the sensor.
1. Correct connection of the plume (it may not be fully inserted).
2. the integrity of the contacts on the motherboard (whether they were damaged during cleaning).
3. Compatibility of the spare part with the model of the phone.
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What to do if the sensor does not work after replacement
If the screen is turned on but no touches are recorded, the following problems may occur:
| Problem. | Reason. | Decision |
|---|---|---|
| Sensor doesn't respond at all | The plume is unconnected or damaged. | Take your phone apart and check your contacts. |
| Touching is not registered where you press. | Incorrect calibration or defective sensor | Refuse the phone or replace the part |
| Screen flickering, artifacts appear | Damage to the matrix plume | Check the integrity of the tape and contacts |
| Phone's off. | Short circuit or disconnected battery | Check battery and board connection |
If the sensor is working but not correctly (such as double taps or "ghost" taps), try:
- Restart your phone in Safe Mode (hold the power button) → «Safe regime»).
- Reset the settings to factory (Settings → Additional → Resetting).
- Update the firmware via Fastboot (if the problem is in the software).
For models with AMOLED-The screen (for example, Xiaomi 12 Pro) after replacement may require calibration of the sensor:
- Install the Touchscreen Calibration app from Google Play.
- Follow the instructions on the screen (usually click on the dots that appear).
- Reboot the phone.
⚠️ Note: If the fingerprint scanner stopped working after the sensor was replaced, then you bought an unoriginal part without a sensor, in which case you will either have to accept the lack of a scanner or buy the original module.
Features of replacing the sensor on popular Xiaomi models
The case design of Xiaomi’s different lineups is different, and the following are key nuances for the most common models.
Xiaomi Redmi Note 10/11/12
In these models, the sensor is glued to the matrix, so you have to change the entire display module.
- 🔧 Screws under the back cover of different lengths - do not confuse when assembling!
- 🔋 Battery plume is very fragile - disconnect it gently.
- 📱 The sensor is assembled with a frame, so gaps after replacement should be absent.
POCO X3/X4/X5
V POCO Hybrid glue is often used, which is difficult to remove:
- 🔥 Heat the screen longer (5-7 minutes) to soften the glue.
- 🧴 Use a solvent for adhesive (e.g. Loctite 7649) to clean the frame.
- 🔊 The speaker and microphone are attached to the sensor – be careful when disconnecting the plumes.
Xiaomi 11T/12T/13
The flagship models have an ultrasonic fingerprint scanner under the screen.
- 🔐 Buy a sensor with a sensor only (the name should be with fingerprint).
- 🛠️ For disassembly, a special tool is needed to remove glued screens.
- 🔄 After replacement, you may need to flash the scanner to activate.
How to check the originality of the sensor after purchase?
Replacement cost: self vs. service center
The price of repair depends on the model of the phone and the type of part, and below are the average prices for 2026:
| Model phone | Cost of sensor (₽) | Cost of service work (₽) | Total (independently) |
|---|---|---|---|
| Redmi Note 10/11 | 1 500–2 500 | 2 000–3 000 | 1 500–2 500 |
| POCO X3/X4 | 1 800–3 000 | 2 500–3 500 | 1 800–3 000 |
| Xiaomi 11T/12T | 3 500–6 000 | 4 000–6 000 | 3 500–6 000 |
| Xiaomi 13 Pro | 8 000–12 000 | 5 000–8 000 | 8 000–12 000 |
Savings in self-repair is 30-70%, but take into account the risks:
- 💥 Damage to the motherboard (cost of repair - from 5 000) ₽).
- 🔧 Loss of watertightness (if not properly sealed body).
- ⏳ Time loss (first replacement may take 2-3 hours).
If you are not sure about your abilities, you should contact the service, especially for flagship models (Xiaomi 13, Mix Fold), where the cost of error can exceed the savings.