How to disassemble Xiaomi Poco X3 Pro: safe instructions with photos and tips

Xiaomi Poco X3 Pro is a popular smartphone with a powerful Snapdragon 860 processor and a capacious 5160 mAh battery, but even such hardware will need repair over time. Disassembly of the device may be necessary to replace the battery, clean from dust, repair the charging connector or diagnose malfunctions. In this article, you will find a step-by-step instruction with a photo, a list of tools and unique tips for disassembling without damaging the plumes and mounts.

It's important to understand that the Poco X3 Pro is not designed to disassemble itself, its body is sealed, and its inside is fragile plumes and chips. Autopsy errors can lead to loss of water resistance (if any), damage to the display or motherboard. If you are not sure of your skills, you better contact the service center. But if you decide to act yourself, follow our recommendations.

We will take a look at the Poco X3 Pro (M2102J20SG) version with 6/128 GB of memory. The instructions are suitable for other modifications (Poco X3 NFC is different!), but note that some elements may differ slightly.

What tools will be needed to disassemble

Without the right tools, it's almost impossible to disassemble the Poco X3 Pro -- you're at risk of scratching the body, breaking the latches, or breaking the plumes. Here's the minimum set you'll need:

• 🔧 Plastic blades (2-3 pc, thickness 0.2–0.5 mm) for the separation of the shell.
• 🔨 The screwdriver. PH00 (magnetic) - for the screws of the back cover.
• 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
• 🧲 Magnetic mat or tray - so as not to lose screws.
• 📱 Suction (diameter 5-7 cm) - for lifting the back cover.
• 🛠️ Tweezers (curved) - to work with plumes.
• 🔋 Multimeter (optional) – to check the battery.

Don't use metal blades or knives, they'll damage plastic latches! If you don't have a hair dryer, you can do with isopropyl alcohol (90%+), but it's less efficient. Also, make a plastic card (like a bank card) that's useful for tidying the lid.

⚠️ Warning: If you're disassembling a smartphone to replace a battery, don't turn it on after you've removed the battery, which can damage the power controller.

Preparing the smartphone for disassembly

Before you start, follow a few mandatory steps:

1. Turn off Poco. X3 Pro and extract SIM-cards and memory cards (if installed).
2. Charge the battery to 30-50% is a safe level for working with the battery.
3. Remove the cover and protective film (if any) – they may interfere.
4. Prepare the workplace: a clean desk, good lighting, no dust or moisture.

We also recommend taking a picture of the screws and plumes at each stage, which will help with the reverse assembly. If you are replacing the battery, check the model: the original battery for the Poco X3 Pro is marked BM4X or DM-09.

If you're planning a complete disassembly (down to the motherboard), consider that the Poco X3 Pro uses double-sided tape to lock the battery, it's got to be carefully cut or softened with a hairdryer. Don't pull the battery by force - it can break the plume!

Removing the back cover: a step-by-step process

This is the most critical step. The Poco X3 Pro's lid is glued around the perimeter, and the inside is plastic latches, and if you act in a careless way, you can break the mounts or damage the antenna modules.

Algorithm of action:

1. Heat the back end of the back cover with a hair dryer (15-20 seconds on each side) at a temperature of 60–70 ° C. Do not overheat - the plastic can deform!
2. With a suction cup, grab the lid at the charging socket (there's less glue) and pull it up. If it doesn't, repeat the heat.
3. Insert a plastic blade into the resulting gap and carefully guide it along the body, separating the glue. Be careful at the corners - there are latches!
4. When the lid is detached, don't remove it completely -- it's connected to the fingerprint scanner plume. Carefully unplug the plume with tweezers.

If the lid doesn't lend itself, don't put too much effort into it. You better warm up the problem area again. On the Poco X3 Pro, it's particularly difficult to separate the lid around the camera, because there's an extra layer of glue.

⚠️ Note: On some versions of Poco X3 Pro under the cover is installed an additional metal screen for protection NFC-Don't confuse it with a motherboard, it's mounted on double-sided tape and uninstrumented.

Battery Removal: Safety First

The battery in the Poco X3 Pro is glued to the body with double-sided tape and additionally fixed with a metal plate. Do not try to pull it out by force - this can lead to fire or swelling!

Procedure:

• 🔧 Unscrew 4 screws that fix the metal plate over the battery.
• 🔥 Carefully warm the battery with a hairdryer (maximum 50)°C. This will soften the glue.
• 📱 Put a plastic blade on the battery at the connector and pull a black tape (pull-tab), if it's not there, use a thin guitar string or fishing line.
• 🛠️ After removal, check the battery for bloating. If it is deformed, do not dispose of it with household garbage!

If the pull-tab breaks, don't panic. Put the battery on the side and slowly drive the blade underneath, separating the glue. Don't use metal objects - they can puncture the battery!

Once the battery is removed, inspect the connector on the motherboard, if it is oxidized or contaminated, clean it with isopropyl alcohol and a brush, which can solve charging problems or sudden blackouts.

Disconnection of plumes and removal of motherboard

Now that the battery is gone, you can start to disconnect the plumes and remove the motherboard. There are quite a few on the Poco X3 Pro, and all the fragile ones are one wrong step, and the screen or camera will stop working.

The order of disconnection of plumes (important!):

1. The display plume (the widest, in the center of the board).
2. The plume of the touch layer (thin, next to the display).
3. Camera plumes (3 pcs: main, ultra-wide-angle, depth sensor).
4. The charger's charger's tail (bottom of the charge).
5. The speaker and microphone plume (right of the charging connector).

To detach, use tweezers or a plastic spatula. Raise the connectors strictly upwards, not to the sides! If the plume does not come out, check if there is a latch that holds (some connectors have one).

Once you turn off all the plumes, unscrew the motherboard screws (there are 12 to 14 of them, of different lengths!) Remember the location of each screw, and when you build them, you can easily confuse them. You can gently shovel the plate with a spatula and remove it.

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If you're taking a motherboard off for repairs (like replacing a charging connector), take a picture of it on both sides beforehand, which will help you connect all the plumes back properly, and pay special attention to the small details of the resistors and capacitors near the connectors.

Disassembly of the front panel: display and buttons

If you need to replace the display, touchscreen or buttons (Volume/Power), you have to disassemble the front, which is more difficult than removing the back cover, because the display is glued around the perimeter.

Important nuances:

• 🔥 The display is glued to liquid glue (LOCA), It's hardening under a UV lamp, and it's going to take a hair dryer and a string/spring.
• 🛠️ The Volume and Power buttons are mounted on plastic latches, and they're easy to break if you pull them by force.
• 📱 The plume of the touch layer is thinner than paper - do not bend it or touch it with your fingers.
• 🔧 Under the display are hidden flexible antennas for NFC And Wi-Fi. Don't hurt them!

To remove the display:

1. Warm up the screen edge with a hair dryer (temperature 70-80 ° C).
2. Insert the fishing line in the corner of the display and carefully lead it along, separating the glue.
3. When the display separates, do not raise it sharply - it is connected by a plume to the motherboard.
4. Disconnect the display and sensor plumes, then remove the panel.

⚠️ Attention: If you're replacing the display, check to make sure the new module is original or certified.Cheap Chinese copies often have color rendering and sensor issues.Original display for Poco X3 Pro has a marking. T1018-0101C.

Smartphone Builder: How to Avoid Mistakes

Putting the Poco X3 Pro back together is often harder than disassembling, and here are the key points to look out for:

• 🔧 Screws: Make sure all screws are screwed into their places.Tangled screws can damage the board or body.
• 📶 Check that the antennas are flexible NFC Wi-Fi is not bent and lies in its grooves.
• 🔋 Battery: Stick it to a new double-sided scotch (e.g, 3M 9448A). Old glue loses its properties.
• 🛡️ Tightness: If you want to restore water protection, apply a thin layer of sealant around the perimeter of the lid.

After assembly:

1. Do not turn on the smartphone right away – let the glue (if used) dry for 10-15 minutes.
2. Check the operation of all buttons, display, cameras and wireless modules.
3. If the smartphone does not turn on, check the connection of the battery plume and display.

If you've got artifacts on the screen after you've assembled, make sure the plume is not compressed. If the fingerprint scanner isn't working, make sure the plume is plugged in correctly and not damaged.

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The most common build error is forgetting to plug the touch layer plume, so the screen works but doesn't respond to touch, and always check all connectors before final assembly!

Frequent questions about the Poco X3 Pro