How to Disassemble Xiaomi Poco M3: Complete guide with photos and tips

Disassembly of the smartphone Xiaomi Poco M3 — The challenge that owners face when replacing a battery, repairing a screen or cleaning from dust. Despite its budget status, the model has many pitfalls: fragile body latches, adhesive display module and the risk of damaging the plumes. In this article you will find a step-by-step instruction with a photo, a list of necessary tools, as well as unique tips that will help you avoid typical mistakes.

It's important to understand: Poco M3 — It's not the most repairable machine, it's designed with special devices like suction cups and mediators and patience, and if you've never taken a smartphone apart before, we recommend that you practice on an old device first or watch video reviews. In 80% of cases, damage during disassembly is associated with improper separation of the back cover - it is held not only by latches, but also by bilateral tape.

This article is suitable for both beginners and experienced users.

• 🔧 What tools are needed and where to buy them
• 📱 Step-by-step process of disassembling from the photo of each stage
• ⚠️ Common Mistakes and How to Avoid Them
• 🔋 Features of replacing the battery and screen
• 🛠️ Tips for Assembly and Performance Checking

Training: tools and materials

Before you start disassembling, make sure you have everything you need, and don't save on tools, because cheap plastic picks break down and can scratch the body.

• 🔩 Set of screwdrivers (cross-haul) PH00, flat 1.5 mm, five-pointed Y00 plume)
• 🧲 Suction cup (diameter 5-7 cm) for separation of the cover
• 📏 Plastic mediators (0.1–0.2 mm thick) or guitar mediators
• 🔥 Hair dryer or thermo-air station (for softening glue)
• 🧴 Isopropyl alcohol 90%+ (clean-up)
• 📦 Container for screws (magnetic or with cells)

If you are planning to replace the battery or screen, prepare:

• 🔋 New battery (original or qualitative analogue, for example, from Baseus or ZMI)
• 📺 Display module (check compatibility with Poco version) M3 — M2010J19CG or M2010J19CI)
• 🧴 Clay. B-7000 or double-sided tape to fix the battery

Where to buy tools? Smartphone repair kits are sold on AliExpress, in radio stores or on the Yandex Market. The full kit costs 500 to 1,500 rubles. Don't buy cheap Chinese screwdrivers: they quickly lick and spoil the screws.

⚠️ Note: If you are looking for Poco M3 For battery replacement, note that the original battery (BM4B) has a capacity of 6000 mAh. Cheap analogues often give 4000-5000 mAh, which reduces the operating time by 30-40%.

2.Switching off the back cover: the most important stage

Poco's back cover M3 It's mounted on 12 latches and double-sided tape, and the first mistake that newcomers make is trying to put a knife or a metal screwdriver on it, and it almost always ends in cracks in plastic or damage to antenna lines (they're located around the perimeter of the lid).

The correct algorithm:

1. Heat the body with a hair dryer (temperature 60–70)°C) for 2-3 minutes, evenly driving around the edges.
2. Then, put the suction closer to the bottom (where the suction is located). USB-C).
3. Carefully pull the sucker up, while putting the lid on with a plastic mediator.
4. As soon as a gap appears, swipe the mediator around the perimeter, snapping the clamps.

The hardest part is to separate the lid from the volume and power buttons, where there are additional latches, and if the lid doesn't respond, warm up the problem area again.

⚠️ Warning: If after the lid is removed, you see torn antenna lines (thin golden tracks on the inside), the smartphone will lose the network signal or Wi-Fi.

3. Battery Removal: Safety Above All

Poco battery M3 It's glued to the body, and it's one of the most dangerous things to do, and it can cause a fire to puncture or deform the battery, and you can never use metal objects to smack it.

Step-by-step:

1. Unplug the protective film from the battery (usually black).
2. Put a plastic blade on the battery from any angle, and if you don't, put the isopropyl alcohol under the battery, it will dissolve the glue.
3. Carefully lift the battery without bending it. If it's stuck, use a thread or guitar string to cut through the glue.
4. Disconnect the power plume (it is attached to the motherboard with a small connector).

If you notice that the battery is swelling (the lid is bent), do not try to remove it yourself - it is dangerous! Contact the service center. The bloated battery can explode when mechanically exposed.

Replacement Tips: When installing a new battery, use double-sided scotch 3M 9448A glue B-7000. Do not apply glue too thick – this can lead to overheating.

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Before removing the battery, take a picture of the location of the plumes and screws, which will help to avoid errors in the reverse assembly.

4. Unconnection of plumes and removal of motherboard

Once the battery is removed, you will have access to the motherboard and plumes. M3 quite a lot:

• 📞 Display plume (the widest, at the top)
• 🔊 Dynamics and microphone plume
• 📶 Antenna plumes (3 pieces, thin)
• 🔋 Charging plume (USB-C)

Procedure:

1. Unscrew all screws holding the metal screen (it protects the board from interference).
2. Carefully disconnect the plumes with a plastic blade, putting them on the side.
3. Remove the metal screen and put it aside.
4. Unscrew the screws that fasten the motherboard (they are usually 8-10 pieces).

Poco screws M3 They're different lengths. Remember where you were, or put them in order. Using the wrong screw can damage the board.

⚠️ Warning: If the display plume has stopped working after the display has been disconnected, check if the motherboard connector is bent, often due to careless removal.

5. Screen replacement: nuances and pitfalls

Poco display M3 — It's a very vulnerable place, and it's glued all around the perimeter, and it takes patience to replace it.

Replacement algorithm:

1. Heat the screen with a hair dryer (temperature 70)°C) for 3-5 minutes.
2. Use a suction cup to separate the display from the body. Start at the bottom edge.
3. Once a gap appears, insert plastic mediators around the perimeter.
4. Disconnect the display plume (it is under metal protection).
5. Install a new screen by pre-cleaning the frame of the old glue.

Important: When buying a new screen, check that the kit is glue for OCA-Without it, the display will peel off and collect dust.

If the screen does not respond to touch after replacement, the reasons may be as follows:

• 🔌 Unconnected or damaged touchscreen plume
• 🔧 Incorrectly installed metal frame (presses on the plume)
• 📱 Incompatible display module (check the article)

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When changing the screen, never press the center of the display, which can damage the matrix.

Assembly and performance check

Poco assembly M3 — process, reverse disassembly, but with a number of nuances:

• 🔩 Screw the screws cross-cross to avoid skewed fees.
• 📶 Before installing the cover, check that all antenna plumes are flat.
• 🔋 The battery should be tightly glued, but without excess glue.
• 📺 After assembly, turn on your smartphone and check the touchscreen, camera, speakers and network.

If the smartphone does not turn on after assembly, follow the following steps:

1. Check if the battery is connected.
2. Make sure the power supply is not bent.
3. Connect the charger – if the charging indicator catches fire, the problem is the power button.
4. If nothing helps, the motherboard may have been damaged (diagnosis is required).

Post-assembly test:

• 📞 Check the phone and microphone (call another phone).
• 📶 Make sure you catch the network and Wi-Fi.
• 🔊 Test the speakers (turn on the music at maximum volume).
• 📷 Take a photo on the front and main camera.

⚠️ Warning: If your smartphone runs out quickly after you replace the battery, check if the charging plume is properly connected. Sometimes it shifts and doesn't provide full contact.

7.Typical mistakes and how to avoid them

Even experienced craftsmen sometimes make mistakes when disassembling Poco M3. Here are the most common:

Newcomer’s advice: If you understand Poco M3 So for the first time, videotape the process, and that'll help you remember the assembly.

Another common problem is the loss of network signal after disassembly, usually due to damaged antenna plumes.

• 📶 Do not pull the plumes by the wires - take only the connector.
• 🔧 Check the antenna fixation after assembly.
• 📱 If the signal is missing, take apart the smartphone and examine the gold contacts on the lid.

FAQ: Frequent questions about the Poco M3 disassembly