Xiaomi Redmi 8A is one of the most popular budget devices of the brand, but even it is not immune to breakdowns. The screen does not respond to touch, the battery is swollen, the speaker stopped working or the charging connector needs to be replaced? In most cases, repair is cheaper if you disassemble the device yourself. However, improper disassembly can lead to damage to the plumes, glass chips or even the phone completely fails.
In this article, you will find a step-by-step guide with a photo, a list of necessary tools and unique tips for disassembling the Redmi 8A, a model that has its own characteristics (for example, adhesive battery fixation and fragile body latches). We will also tell you what mistakes beginners often make and how to avoid them. If you have never disassembled smartphones, do not worry: with the right approach, even a beginner will cope in 20-30 minutes.
Preparation for disassembly: tools and security measures
Before you start, make sure you have everything you need. Xiaomi Redmi 8A does not require professional equipment, but you can not do without special tools.
- 🔧 Plastic mediators or shoulder blades (2-3 pieces) - for careful tweaking of the body. Metal objects (knives, screwdrivers) can scratch the frame or damage the plumes.
- 🔨 The screwdriver. PH00 — It's a screwdriver that can rip off the slats.
- 🔋 The screen suction cup will help separate the front panel from the body.
- 🧴 Isopropyl alcohol (90%+) — remove glue residues from the battery or body.
- 📦 A screw container – a magnetic substrate or a small box so as not to lose small parts.
- 🔥 Hair dryer or thermoair station - for softening the glue (optional, but simplifies the process).
Also, prepare the workspace: the desk should be clean, well-lit and without static electricity (ideally an antistatic mat). SIM-If the battery is swelling, don't use a hair dryer and wear safety glasses!
⚠️ Note: If you are looking for Redmi 8A with a faulty battery (blown or leaky), do not apply force to the body - this can lead to fire.
Step 1: Removing the back cover
The Xiaomi Redmi 8A is mounted on latches and glue, so you need to remove it carefully. Start by warming the edges with a hairdryer (temperature not higher than 60 ° C) for 1-2 minutes, this will soften the glue. If the hairdryer is not, you can do without it, but you have to put more effort into it.
Then proceed as follows:
- Apply the suction cup to the bottom of the screen (near the charging connector) and pull up slightly. If the lid doesn't lend itself, apply a plastic mediator to the side.
- Once there's a gap, insert the mediator and guide them gently around the perimeter, separating the latches. Take your time, the latches at the corners can break.
- When you take the lid off, put it aside, and underneath it you'll see the battery, the motherboard, and the plumes.
At this point, many people make the mistake of trying to pull the lid off with a jerk or using metal objects, leaving scratches on the frame or breaking plastic latches, and if the lid doesn't come off, warm up the edges with a hairdryer again.
☑️ What to do before removing the cover
Step 2: Shutting off the battery
Before you touch the motherboard or plumes, be sure to turn off the battery. In the Redmi 8A, it's glued to the body, but the connector is located separately. Find it at the top of the battery (near the camera) - it's a small white connector with a black plume.
Carefully tuck the connector into a plastic blade and disconnect it. If the plume doesn't respond, don't pull it by force, check if there's a latch that's locked (the Redmi 8A doesn't have one, but some versions may have one), and after the battery is turned off, the phone is completely de-energized, and you can start disassembling it further.
⚠️ Warning: If you accidentally close the battery contacts with a metal object, do not turn on the phone for 10-15 minutes - this can save it from short circuit.
If you need to replace the battery, you can remove it now.
- Put a plastic shoulder blade on either side.
- Gently pull it upwards, separating it from the adhesive base. If the battery doesn't lend itself, moisten the adhesive under it with isopropyl alcohol and wait 1-2 minutes.
- After extraction, clean the body of glue residues with alcohol.
What to do if the battery is swelling?
Step 3: Removing the motherboard
The Redmi 8A motherboard is mounted on multiple screws and connected to the screen, camera and other modules with plumes, and before you remove it, you need to disconnect all the connectors. Here's their layout (top down):
- 📸 Main camera plume (top left corner of board).
- 📞 Display plume (board center, wide connector).
- 🔊 Dynamics and microphone plume (lower right corner).
- 📶 Antenna connectors (small gold connectors on the sides).
Disconnect the plumes one by one, putting them on a shoulder blade. Don't pull the wires, you can pull the connector from the board. After disconnecting all the plumes, unscrew the screws (there are 6-8 of them, depending on the modification) and carefully raise the board. If it is not removed, check if there are any unnoticed mounts.
| Element | Number of screws | Type of screwdriver. | Notes |
|---|---|---|---|
| Maternity fee | 6–8 | PH00 | The different lengths of the screws – remember where it was. |
| Display plume | — | — | Fixed by a latch, bends upwards |
| Camera. | 1 | PH00 | The screw is hidden under the sticker |
| Vibromotor | 1 | PH00 | It's easy to lose in a breakup. |
Once the board is removed, put it on an antistatic surface, and don't put it on metal or other conductive materials, which can cause static discharge and damage the chips.
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If you're taking pictures of the disassembly process, take pictures before you turn off each plume, which will help you avoid confusing them when you reverse assemble them.
Step 4: Dismantling the screen and front panel
The Redmi 8A screen is glued to the frame, but it's easier to remove than the back cover.
- Warm up the edges of the screen with a hair dryer (temperature to 50 ° C) for 1-2 minutes.
- Put a plastic blade on the display from any angle, starting with the one that has no plumes (usually at the bottom).
- Carefully move the shoulder blade around the perimeter, separating the glue. If the screen does not respond, warm up again.
- After separation of the glue, raise the screen, but do not tear it off completely - it is connected by a plume to the motherboard.
If you replace the display, you can now disconnect the plume (which is fixed by the latch) and remove the old screen. When you install a new one, don't touch the inside of the display, because the fatty traces can cause image defects.
⚠️ Warning: If the screen cracks, put tape on it so that the fragments don't break apart when you take them off!
Step 5: Replacing popular components
The following parts are most often broken in the Redmi 8A:
- 🔌 Charging connector – oxidizes or breaks with frequent connections. To replace, you need to solder off the old connector and solder a new one (you need a soldering station).
- 🔈 Speaker and microphone - attached to glue and plume, and it takes 5-10 minutes to replace.
- 📷 Main camera - fixed by one screw. When replacing, check that the new module is the same model (for example, OV13855 12MP version).
- 📶 Antenna modules – if the network is lost, check the integrity of the antenna plumes.
To replace the charging connector (USB Type-C) you will need:
- Solder the old socket with a soldering iron (temperature 300-350 ° C).
- Clear the contact areas with alcohol.
- Sell a new connector, making sure not to close the neighboring contacts.
- Check with multimeter the absence of a short circuit.
If you've never soldered, you'd better leave the job to a professional, and the wrong soldering can cause the power controller to fail.
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The most common cause of malfunctioning charging connector in Redmi 8A is moisture or dust. Before replacing, clean the socket with alcohol and check the integrity of the contacts.
Step 6: Reverse Assembly and Verification
To assemble Xiaomi Redmi 8A need in reverse order, but with some nuances:
- Make sure all plumes are tightly connected (they should click when fixing).
- Twisting the screws cross-cross to make the charge go smoothly.
- Before installing the battery, check that it does not have swelling or damage.
- Stick the back cover to a double-sided tape or new glue (e.g. B-7000).
After assembly, turn on the phone and check:
- 🔋 Charging (connect the cable and make sure the current is going).
- 📵 Network (check signal strength and call capability).
- 🔊 Sound (speaker and microphone).
- 📷 Camera (take a test shot).
If something doesn't work, take the phone apart again and check the plumes, and most often, problems arise from a loosely inserted display connector or battery.
Frequent Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when disassembling the Redmi 8A. Here are the most common:
- 🔧 Torn screws - use a high-quality screwdriver PH00 And don't put too much force on it.
- 💥 Damage to the plume of the display - do not pull the wires, but push the connector with a spatula.
- 🔥 Overheating of the battery - do not heat it with a dryer longer than 2 minutes.
- 🧲 Loss of screws – use a magnetic substrate or container with cells.
- 📱 Cracked screen when removed - if the display is damaged, seal it with tape before disassembling.
If you break the latch of the case or rip the screw, do not panic. The case can be glued with superglue (dot!), and the screw replaced with a new one (they are sold in smartphone repair kits).
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The Redmi 8A's general rule of disassembly is that if something doesn't respond, don't use force. You'd better check again if all the screws are twisted and if you forgot to disconnect the plume.