Replacement of the display on Xiaomi Mi A3: Detailed guide with photos and tips

Xiaomi Mi A3 — It is a popular smartphone with the Android One software platform, but its display is vulnerable to mechanical damage. Cracks, broken pixels or a broken touchscreen are common problems that are solved by replacing the screen. In this article, we will discuss how to change the display yourself, without contacting the service center, saving up to 70% of the cost of repairs.

The process requires precision and basic electronics skills, and we'll detail every step from the selection of parts to the final testing, and focus on the common mistakes that cause damage to plumes or motherboards, and if you've never taken a smartphone apart, don't worry: it's customized for beginners, with photos and video links.

Important: Mi A3 has AMOLED-This means that when you replace the entire module, the entire module changes, not separately the glass or matrix. The average cost of the original screen is 3,500-5000 rubles (2026), analogues - from 2,000 rubles.

Preparation: tools and spare parts

Before disassembling, you can assemble everything you need, and without the right tools, you can damage the body or the plumes.

• 🔧 Plastic blades (2-3 pieces) - for careful smearing of the body. Metal will not work!
• 🔨 Cross screwdriver (PH00 or PH000) — Xiaomi screws.
• 🧲 Magnetic mat or container – to avoid losing small details.
• 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
• 📱 New display module – check compatibility (original article: MDY10-0026A).
• 🧴 Isopropyl alcohol (90%+) — clean-up.
• 🔌 Tweezers for working with plumes.

Pay attention to the quality of the parts. Cheap counterparts often have problems with color reproduction or touchscreen.

• 🛒 AliExpress (shops with a rating of 98%+).
• 🛒 4PDA Market - a forum with reviews.
• 🛒 Local Service Centers (Ask for Contract Displays).

Screen selection tip: if budget allows, take a module with a pre-painted frame (OCA-It's going to make it easier to assemble and lessen the risk of dust. The original displays come with tape, most of them don't have tape, and you're going to have to glue them yourself.

⚠️ Warning: Do not use a household hair dryer to heat the enclosure! airflow must be uniform and controlled. Overheating above 90°C may damage battery or charge.

2.Shooting Xiaomi Mi A3: step-by-step

Start by turning off your phone and retrieving it. SIM-Follow the instructions:

1. Heat the back cover with a hair dryer around the perimeter for 2-3 minutes. The glue will become elastic, and the cover will be removed more easily.
2. Put a blade in the area of the charging socket, and there's a bigger gap, and the risk of damaging the plumes is minimal.
3. Carefully drive the blade along the body, separating the lid, and if you feel resistance, heat the place again.
4. Unscrew 10 screws (marked in the photo below) with a cross screwdriver. Rotors of different lengths - remember their location!

When you take the lid off, you'll see the insides of the smartphone, and the key is not to pull the plumes, they're fragile and they can easily break.

Now disconnect:

1. Battery connector (use a plastic spatula).
2. The display plume -- it's locked with a latch. Pull it up, then pull the plume out.
3. The fingerprint scanner plume (if integrated into the screen).

⚠️ Warning: If the screen flashes or doesn't turn on after disassembly, check the plume contacts for oxidation. Rub them with alcohol and a soft brush. Often the problem is solved by reconnecting.

3. Removing the old display and preparing a new one

The old matrix is held by the glue around the perimeter to remove it.

1. Heat the screen with a hairdryer (60-70)°C) 1-2 minutes.
2. Slip it from any angle and slowly lead along the frame.
3. If the glue is too strong, use a thread or guitar string (saw under the screen and "saw" the glue).

After removal, clean the frame of the glue residue with alcohol.

• 🔍 Check the integrity of the plume – it should not be dented or torn.
• 📏 Compare the connectors to the old screen. The original has 30 contacts, some have 28 (the fingerprint scanner may not work).
• 🎨 If you bought a module without a frame, stick a two-way tape (3M 9448A perimeter.

Critical, on the Mi. A3 The plume of the display runs under a metal plate that is mounted by screws, and if you forget to unscrew it before you take it off, the plume will break, which is a mistake that occurs in 40 percent of self-repairs.

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Before installing a new display, turn on the phone without it and check if the backlight is on when you connect the plume. This will help eliminate problems with the board.

4. Installation of a new display and assembly

The installation process is reversed disassembly, but with nuances:

1. Connect the new screen plume to the circuit board connector. The latch should click.
2. Press the display against the frame, starting at the top, make sure it sits smoothly, without skewing.
3. Turn the screws in reverse sequence. Don't pull! A3 soft.
4. Connect the battery and check the screen before final assembly.

If the screen is not switched on:

• 🔌 Check the contact density of the plume, sometimes it helps to press the connector lightly.
• 🔄 Reboot the phone. Once the display is replaced, the system may not immediately identify the new matrix.
• 🛠️ If there is an image, but there is no touchscreen, the problem is in the plume or its contacts.

After a successful test:

1. Apply new glue to the lid (or use double-sided scotch).
2. Press the lid, starting with the charging connector, and click it around the perimeter.
3. Check the tightness: if the lid dangles, warm it up with a hair dryer and press it again.

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Always test the display before final assembly, and if the screws are screwed, the screen doesn't work, you'll have to disassemble the phone again.

5.Typical problems after replacement and their solution

Even with a careful replacement, there may be problems.

If the fingerprint scanner stopped working after replacing it, chances are you bought a module without support for this feature. A3 The sensor is integrated into the display, and not all analogues support it:

• 🔄 Return the old screen and order the original module.
• 🔐 Set up the unlock on PIN-code.

Calibration tip: If colors seem dull, go to Settings → Display. → Additionally. → Color mode and select "saturated." This compensates for the disadvantages of the non-original matrices.

6. Alternative repair methods

If replacing the display seems difficult, consider other options:

• 🛠️ Contact the service - the average cost of replacement in 2026: 1,500-2,500 rubles (excluding spare parts).
• 📱 Use a phone with cracks – if the touchscreen works, you can stick a protective glass (for example, Spigen Glas.tR) EZ Fit).
• 🔄 Buy used displays – on Avito or Youla often sell work screens from 1000 rubles.
• 📦 Exchange phone – if the damage is serious, consider trade-in in communication salons (for example, Messenger or MTS).

For those who are willing to repair themselves but are afraid of damaging the board, there is an alternative method: replacing only the glass (if the matrix is intact), but this requires special equipment (laminator) and skills, so it is not suitable for everyone.

7.The cost of repair: a comparison of options

Prices for the replacement of the display Xiaomi Mi A3 vary by region and type of part: Current data for 2026:

Cost of work in the service:

• 🏙️ Moscow/SPb: 1,800–2,500 rubles.
• 🏘️ Regions: 1,200–1,800 rubles.
• 🔧 Private masters: 800-1 500 rubles (risk of poor-quality repairs).

If you decide to repair yourself, the total cost (with tools) will be ~3,000 to 4,000 rubles for the original screen, 30 to 40 percent cheaper than the service, but consider the risks: if the board is damaged, repairs can cost 10,000 rubles.+ ruble.

FAQ: Frequent questions about replacing the display