Replacement of touchscreen with Xiaomi Mi A2 Lite: a detailed guide with photos and videos

Screen cracks, broken touch zones or “ghost” taps – Typical Xiaomi Mi problems A2 Lite after 2-3 years of operation. Changing the touchscreen module (touchscreen) on this model is more difficult than on flagships with adhesive design: it uses a frame holder that captures the display unit.

In this article, we'll take a step-by-step look at each step, from spinning the screws to connecting a new touchscreen, and we'll tell you how to avoid common errors (like damage to the battery plume), what tools you'll need, and where to buy an original sensor with a warranty, and how to check after replacement and calibrate the screen if the touches float.

If you've never taken a smartphone apart, start by watching the video instructions (links are at the end of this article) and get the workspace ready. The minimum set of tools will cost 500-800 rubles, but save you 3-5 thousand on repairs. And if the screen is already completely dead, the worst thing that can happen is damage to the flexible plume (it can also be replaced separately).

⚠️ Critical warning: Mi A2 Lite has a fragile plastic case — if you open it sloppy, you can burst the lid latches or crack the camera frame. If you're not sure about your skills, you better contact the service.

1. Diagnosis: Is it really the touchscreen to blame?

Before replacing, make sure that the problem is in the touch layer, not in software failure or damage to the motherboard. A2 Lite:

• 🔍 Screen cracks + partially or completely no contact is working.
• 👆 «Ghostly taps: the phone opens apps or scrolls through pages.
• 🎯 Dead sensor zones: does not respond to touch in certain areas (e.g., at the edges).
• 🔄 Hanging when scrolling: the screen “sticks” when scrolling lists.

If the screen is not fully responsive but the image is displayed, the problem may be:

1. The touchscreen plume (passes away or is damaged).
2. The sensor controller on the motherboard.
3. Software failure (solved by resetting or flashing).

🔧 Quick check: connect your phone to your PC and try to control it through ADB (If the commands are executed, but the screen does not respond to touch, the touchscreen or its plume is to blame.

2. Selection of touchscreen: original vs. copy

On Mi. A2 Lite installs two types of touchscreens:

1. Original (OEM) — They are manufactured in the same factories as for Xiaomi. they cost 2,500-4000 rubles, but guarantee 100% compatibility and display quality.
2. Aftermarket copies are cheap (800-1,500 rubles), but may have problems with color reproduction, sensitivity or backlighting.

📌 Where to buy:

• 🛒 AliExpress – Cheap Copies (Look for 98-rated sellers%+ photo-reviewed).
• 🏬 Local service centers – originals or quality replicas.
• 🌍 eBay/Amazon — Original with a guarantee, but more expensive.

⚠️ Attention: On Mi A2 The Lite touchscreen and display module are separate (unlike most smartphones where they are glued together), which means that you can only replace the sensor, leaving the old screen, but if the display is also cracked, it is easier to buy a full module (touch screen). + screen, it is not much more expensive.

💡

Before buying, check if the new touchscreen supports multi-touch (simultaneous touch 5)+ Cheap copies are often limited to 2-3 dots, which interferes with play and gestures.

3. Tools and training required

To replace the touchscreen with the Mi A2 Lite will need to be needed:

• 🔧 Screwdriver kit: cross-haired (PH00), flat (1.5 mm), five-pointed (for screws under the back cover).
• 📱 Plastic mediators / spoons - for careful slashing of the lid and plumes.
• 🔥 Dryer or heat tile - for softening the glue (temperature 60-80)°C).
• 🧲 Magnetic mat - so as not to lose the screws.
• 🔌 Tweezers – to work with small details.
• 📦 Double-sided tape or glue B-7000 — touchscreen.

📌 Preparation of the workplace:

1. Cover the table with a soft cloth (so as not to scratch the screen).
2. Turn off the phone and remove it. SIM-map + memory-card.
3. Charge the battery by 30-50% (if it is completely discharged, the phone can turn on during repairs).
4. Take a photo of the back cover - this will help to correctly position the screws during assembly.

Is the phone off?|Whether extracted SIM microSD?|All tools are ready?|Is the back cover photographed?|Is there a backup bilateral scotch?-->

⚠️ Warning: Do not use metal tools to tweak plumes - they can damage the contacts. Better buy a plastic spooger (costs 100-200 rubles).

4. Step-by-step instructions for replacing the touch screen

Disassembly of Mi A2 Lite requires precision - plastic latches are fragile and plumes are easy to tear:

Step 1: Removing the back cover

1. Heat the hair dryer edge of the back cover (30-40 seconds) - this will soften the glue.

2. insert a plastic mediator into the gap between the lid and the housing (start at the bottom edge where the connector is located). USB-C).

3. Carefully drive the mediator around the perimeter, snapping the clamps. Do not force - if the lid does not respond, warm up again.

4. After removing the lid, put it aside (it will be useful for reverse assembly).

Step 2: Shutting off the battery

⚠️ Before disconnecting the plumes, be sure to turn off the battery, otherwise you risk burning the motherboard.

1 Unscrew 4 screws that fix the metal plate above the battery.

2. Put a plastic tool on the battery connector (it is white) and gently disconnect it.

Step 3: Withdrawal of the motherboard

1 Unscrew all the screws that hold the motherboard (there are about 10-12 pieces, of different sizes – remember where it was!).

2. Carefully tuck the board with a mediator, starting at the top edge (where the camera is).

3. Disconnect all plumes:

• 📷 Main camera plume.
• 🔊 Dynamic plume.
• 🔋 Charging connector plume.
• 🖥️ The plume of the touch screen (the most fragile!).

⚠️ Attention: Touchscreen plume glued to frame - don't pull it by force! Warm up the hairdryer attachment and gently separate.

Step 4: Replacement of the touchscreen

1. If you only change the sensor (without the screen), carefully separate the old touchscreen from the display module.

• Warm up the screen with a hair dryer (temperature 70-80)°C).
• Insert a plastic spatula between the touchscreen and the screen.
• Slowly drive the shoulder blade, separating the layers (they are glued, but not strongly).

2 Remove the remnants of old glue from the frame (you can use isopropyl alcohol).

3. Apply a new bilateral scotch or glue B-7000 framed.

4. Install a new touchscreen by combining the connectors. Press it evenly (for example, putting a book on top for 10-15 minutes).

Step 5: Reverse Assembly

1. Connect all the plumes in reverse order (start with the touchscreen, then the camera, speaker, etc.).

2. Set the motherboard and twist the screws (make sure that none is left over!).

3. Connect the battery and check the operability before final assembly:

• Turn on the phone.
• Check your reaction to touch.
• Make sure there are no “broken” pixels on the screen.

4. Close the back cover and twist the screws.

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The most common build error is a skewed touchscreen, so if you're changing the screen and you're "worrying" when you press it, it means the tape is not evenly applied or the module is not pressed well. Take the phone apart and repeat step 4.

5. Calibration of the touchscreen after replacement

Even the original touchscreen can require calibration - especially if after replacing the touch "float" or trigger in the wrong place. A2 Lite has two ways:

Method 1: Through the Engineering Menu

1. Open the Phone application and enter the code:

##6484##

2. Select the Touch Screen Test.

3. Follow the instructions on the screen (usually click on the dots that appear).

4. After the test, save the settings and restart the phone.

Method 2: With the help of ADB

If the engineering menu is not available, use ADB:

1. Connect the phone to the PC and turn on Debugging by USB (Settings → The phone. → Build Number – tap 7 times, then return to Settings → System system → For developers).

2. Enter the command:

adb shell wm touch calibration reset

3. Reset the device.

🔍 Sensitivity check: Install the Touch Screen Test app from Google Play and test all areas of the screen. If some areas do not respond, it may be a curved touchscreen or a damaged plume.

6. Common mistakes and how to avoid them

Even experienced masters sometimes make mistakes when replacing the touchscreen with Mi. A2 Lite. Here are the most common ones:

• 🔧 Thrown screws - use high-quality screwdrivers and do not apply excessive force. If the screw "licked", try to twist it out with a rubber harness or super glue.
• 🔥 Screen overheating – Do not heat one point with a hair dryer for longer than 10 seconds, otherwise you will damage the matrix.
• 📵 Torn plumes – always poke them with a plastic tool, not a nail or metal.
• 🔋 Forgot to turn off the battery – it can lead to a short circuit.
• 📏 Uneven touchscreen gluing – because of this, the screen can “play” when pressed.

⚠️ Note: If the phone does not turn on after assembly, check:

1. Is the battery plume connected?
2. Are the contacts closed on the motherboard (look for foreign objects).
3. Is the power button installed correctly (sometimes it interferes with the inclusion).

💡

If the speaker or microphone stopped working after the touchscreen was replaced, chances are you forgot to plug in the corresponding plumes. Take the phone apart and check all the connectors.

7.Where to buy spare parts and how much it costs

Prices for touchscreens for Mi A2 Lite varies depending on the quality and place of purchase.Here are the current offers for 2026:

💡 Savings tip: If you buy a touchscreen on AliExpress, order 2 pieces at once - often sellers give a discount, and a spare module will be useful for the future.

📌 Replacement of touchscreen in the official service Xiaomi will cost 4000-6000 rubles (with spare parts). In informal workshops – 2,500-4000 rubles. Self-replacement, taking into account the purchase of tools costs 2-3 times cheaper, but requires accuracy.

8. Frequently Asked Questions (FAQ)