Independent replacement of the touchscreen on Xiaomi: from disassembly to calibration

Why Change Your Own Touch Screen and When It’s Justified

Touch screen on Xiaomi is one of the most vulnerable parts of the smartphone. Falling from a height, hitting a hard surface or even prolonged pressure in the pocket can lead to cracks, “dead zones” or complete failure of the sensor. The service center will take from 2,500 to 8000 rubles (depending on the model), while the module in Chinese stores costs 2-3 times less.

If you have experience with small electronics, patience and a set of tools (which we will discuss below), a self-replacement will cost 1,000-3 500 rubles - this is the price of a new touchscreen plus glue and tape. K50 Gaming) have a complex design with additional sensors under the screen, and errors in disassembly can damage the plumes or motherboard. The main criterion is that if the phone turns on but the sensor does not respond - the chances of a successful replacement are high. If the screen is completely black (even when backlit), the problem may be in the plume or board.

In this article, we will examine:

• 🔧 What tools are needed and where to buy them
• 📱 How to disassemble Xiaomi without damage (on the example of popular models)
• 🔌 Step-by-step connection of a new touch screen and testing
• ⚠️ Common Mistakes and How to Avoid Them

Preparation: tools and spare parts

Before you start disassembling, make sure you have everything you need.

• 🔨 Plastic blades (2-3 pieces) - for careful smearing of the body. Metal ones risk leaving scratches.
• 🔧 Screwdriver. T3/T4/T5 — Most of the screws in Xiaomi have Torx cruciform heads.
• 🧲 Magnetic mat or tray – so as not to lose small screws (there are 15-30 pieces in the smartphone!).
• 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
• 📏 Suction cups (2 pcs) – help to raise the screen after heating.
• 🧴 Isopropyl alcohol 90%+ — glue-cleaner.
• 🛠️ Double-sided tape or glue B-7000 — touchscreen.

Where to buy spare parts? The best options:

• 🌍 AliExpress - cheap original and non-original touchscreens (delivery 2-4 weeks%+ and photo reviews.
• 🏬 Local service centers – often sell used parts from donors (cheaper by 30-50%).
• 🛒 Specialty stores (e.g. FixMarket, Chip and Deep) – fast delivery, but prices are higher.

⚠️ Note: Before buying a touchscreen, check its compatibility with the phone model and screen version (for example, the Redmi Note 10 Pro has two screen modifications: Samsung). AMOLED and BOE LCD). The discrepancy will lead to problems with color reproduction or touching.

💡

Before disassembly, completely discharge the battery (up to 0%) or remove it - this will reduce the risk of short circuit in case of accidental contact of tools with the board.

Step-by-step disassembly of the phone

The process of disassembly depends on the model, but the overall scheme is the same for most Xiaomi. Consider the universal algorithm on the example of the Redmi Note 11 Pro (similar to the one for the other). POCO X4 Pro, Mi 10T etc.).

Step 1. Turn off the phone and remove the back cover.

• 🔌 Turn off the phone and remove it. SIM-card and memory card (if any).
• 🔥 Heat the back cover around the perimeter with a hair dryer for 2-3 minutes (keep it 5-7 cm away so as not to melt the plastic).
• 🧲 Put the lid on a plastic spatula starting at the bottom edge (usually with weaker glue). Use suction cups for convenience.

Step 2. Disconnect the battery.

• ⚡ Find the battery plume (usually at the bottom of the board, closed with black tape).
• 🔧 Carefully tuck the connector with a plastic spatula - do not pull the wires!
• 📌 Fix the connector with tape to the case, so as not to accidentally close the contacts.

Step 3. Remove the motherboard.

• 🔩 Unscrew all the screws (they can be of different lengths - remember where it was standing!).
• 🖥️ Disconnect all plumes: cameras, speakers, power/volume buttons.
• 📱 Raise the fee over the edge and put it on a safe surface (such as an antistatic mat).

Battery's off.|All screws from the front panel removed|Heated glue around the perimeter of the screen|Suction pads and shoulder blades prepared-->

At this point, you've got to the touchscreen. Importantly, in some models (like the Xiaomi 12 Pro), the screen is glued to the middle bezel, and it needs to be heated on both sides. If the glue is too strong, use isopropyl alcohol to dissolve the residues.

⚠️ Attention: In the phones with AMOLED-screens (e.g., screens, POCO F4 GT) The touchscreen is often assembled with a display, and if you only bought a touchpad, you'll have to separate it from the old screen, which requires experience and special equipment (laminator.

Installation of a new touchscreen and assembly

Now, the most important step is to install a new touchpad, and it's important to be consistent and accurate.

Step 1. Prepare a new touchscreen.

• 🧴 Clean the phone frame of old glue with alcohol and a napkin without pile.
• 📏 Remove the protective film from the new touchscreen (if any) and check the integrity of the plume.
• 🎨 Apply a thin layer of glue B-7000 or bilateral tape around the perimeter of the frame (do not overdo it – the surplus can get on the speaker or microphone!).

Step 2, connect the plume.

• 🔌 Carefully insert the touchscreen plume into the motherboard connector, and it should click on the light clicksound.
• 🔍 Check if the contacts are bent – this is a common cause of a sensor that is broken after replacement.

Step 3, touchscreen.

• 📱 Place the touchscreen on the frame, combining the holes for the speaker and the front camera.
• 🔨 Press the screen evenly over the entire surface (you can use a heavy book wrapped in a soft cloth).
• 🕒 Let the glue grip 10-15 minutes before final assembly.

After installing the touchscreen, collect the phone in reverse order:

1. Set the motherboard and twist the screws.
2. Connect the battery plume and the rest of the connectors.
3. Close the back cover (if damaged, replace it or use plastic glue).

(1) Battery connection;

(2) Integrity of the touchscreen plume;

(3) No short circuit on the board (foreign metal particles).-->

Testing and calibration of the sensor

After assembly, you need to check the health of the new touchscreen. Turn on the phone and do the following:

Verification of basic functions:

• 📱 Swipe your finger around the screen, there should be no dead zones».
• 🎨 Check the color rendering: display a white background (for example, in Settings) → Screen) and make sure there are no stains or divorces.
• 🔊 Make sure the speaker and microphone are not silenced (sometimes the glue gets into the holes).

Sensor calibration (if required):

On some models (e.g. Redmi) 9A or POCO M3) After the touchscreen is replaced, it may require calibration:

1. Go to Settings → System → Additional → Screen Calibration.
2. Follow the instructions on the screen (usually click on the dots that appear).
3. Reboot the phone.

3. Multi-touch check:

• Open the Settings. → The phone. → Version. MIUI and click on the kernel version several times – the testing menu should appear.
• Select Touch Test and test your reaction to multiple touches at the same time.

⚠️ Attention: If the sensor reacts with a delay or "jumps" when touching, the problem may be incomplete plume fit or damage to the contacts.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when replacing touchscreen, and here are the most common ones and ways to prevent them:

Another common problem is that the power/volume buttons fail after assembly, and this happens when the button plume is not fully inserted into the connector or squeezed by the board.

1. Disassemble the phone before the connection of the plumes.
2. Check that the button connector is clean and will not bend.
3. Carefully insert the plume before clicking.

If after replacing the touchscreen, the phone stopped charging, check:

• 🔌 Integrity of the charging plume (it goes along with the connector) USB-C).
• 🔋 Battery connection – sometimes the plume leaves when assembled.

Should I go to the service?

Self-replacement of the touchscreen saves money, but is not always justified.

• 📱 You have a model with an ultrasonic fingerprint scanner (for example, Xiaomi 13 Pro) – its setting requires special equipment.
• 🔧 You’ve never taken apart electronics – the risk of damage to the board is too high.
• ⚡ The phone does not turn on after replacement (possibly damaged board or plumes).
• 💰 The cost of a spare part exceeds 50% of the price of the phone - in this case it is more profitable to buy a new device.

Average prices for replacement of touchscreen in services (2026):

• Redmi Note 10/11: 3 000–4 500 ₽
• POCO F3/F4: 3 500–5 000 ₽
• Xiaomi 12/13 series: 5 000–8 000 ₽

If you still decide to repair your phone yourself, here are 3 tips from the masters:

1. Take a picture of each stage of disassembly - this will help not to confuse screws and plumes during assembly.
2. Use an antistatic bracelet or at least touch the metal body of the PC system before work – this will remove static electricity.
3. If the screen does not respond after replacement, do not panic - in 80% of cases, the problem is solved by reconnecting the plume.

FAQ: Frequent questions about replacing the touchscreen