Xiaomi Redmi 6A (codenamed cactus) remains a popular budget device years after its release, and its simplicity and maintainability make it ideal for self-maintenance, from battery replacement to plug cleaning. But disassembly requires care: the fragile plume of the fingerprint scanner, battery adhesive, and thin slats in the case can turn the process into a puzzle for beginners.
In this guide, we will detail how to disassemble the Redmi 6A without damage, what tools you will need and what to look for when you build them back, focus on common errors that break latches or tear the display plume, and provide a tool comparison table and alternative ways to disassemble if you do not have professional equipment at hand.
Preparation for disassembly: tools and security measures
Before you start, make sure you have everything you need. Xiaomi Redmi 6A is not a “dismountable” smartphone like the iPhone, but there are nuances here, for example, the adhesive battery base requires a special approach, and plastic latches of the case easily break when you open sloppy.
Here is the minimum set of tools:
- 🔧 Plastic mediator or guitar mediator (to separate the body without scratches).
- 🔨 The screwdriver. PH00 (rear-cover).
- 🧲 Suction (to raise the display, if you plan to remove it).
- 🔥 Hair dryer or thermoplatform (to soften battery glue).
- 📦 Loads for screws (so as not to lose small details).
If you're disassembling your phone for the first time, we recommend buying a smartphone repair kit (costs ~300-500 rubles), which usually includes all the necessary screwdrivers, shoulder blades and even tweezers. The alternative is to use a plastic card instead of a mediator, but the risk of scratching the case is higher.
⚠️ Warning: Do not use metal tools to disengage the body! even careful movement can leave scratches on the plastic or damage the plumes inside.
Step-by-step: how to remove the back cover
The first stage is the detachment of the back cover. 6A It is mounted on plastic latches and two screws under the slot cover. SIM-Here's how to do it right:
- Turn off the phone and remove the tray. SIM-map.
- You put the tray lid on a plastic mediator, and you take it off, and underneath it you'll see two screws, and you'll unscrew them with a PH00 cross screwdriver.
- Warm up the hair dryer edge of the back cover (temperature) ~50–60°C) for 1-2 minutes, this will soften the glue and facilitate the separation.
- Insert the mediator into the gap between the lid and the body (start at the bottom edge, next to the USB-C connector) and gently lead along the perimeter, snapping the clamps.
If the lid doesn't lend itself, don't use force -- you better dry the problem area again. A typical beginner's mistake is to try to open the lid from the top edge, where the camera plumes and the fingerprint scanner are located, and that's fraught with damage!
☑️ Checklist before lid removal
After removing the cover, you will see:
- 🔋 A glue-based battery.
- 📷 Main camera module (mounting on screws).
- 👆 Fingerprint scanner plume (very fragile!).
- 🔊 Dynamics and vibrator.
Disconnecting the battery and removing the motherboard
Before any internal manipulation, be sure to turn off the battery. In Redmi 6A, this is done by disconnecting the power plume from the motherboard.
- Carefully put the black battery connector on a plastic spatula.
- Unscrew 8 screws that attach the metal plate over the motherboard (use the PH00).
- Remove the plate and disconnect all the plumes: the display, cameras, fingerprint scanner and power buttons.
- Unscrew the remaining screws of the motherboard (there are 4-5 pieces) and carefully lift it.
In the Redmi 6A, the fingerprint scanner plume is glued to the back cover - don't pull the board up sharply, otherwise you'll tear it! It's better to gently separate the plume from the lid with a plastic tool first.
| Element | Number of screws | Type of screwdriver. | Notes |
|---|---|---|---|
| Back cover. | 2 | PH00 | Under the lid SIM-map |
| metal plate | 8 | PH00 | Different lengths – remember the location! |
| Maternity fee | 5 | PH00 | One screw under the sticker |
| Camera. | 2 | PH00 | The screws are very small. |
⚠️ Attention: At Redmi 6A One of the motherboard screws is hidden under a sticker with IMEI. If it is damaged, the warranty (if it is still valid) will be lost.
Removal of the display: risks and recommendations
The Redmi 6A display is mounted on glue and plumes, and replacing it is one of the most difficult operations, because it can damage the touchscreen plume or the screen itself, and if you just need to change the battery or clean the connectors, you don't have to remove the display.
If you need to replace the display, do this:
- Warm up the screen edge with a hair dryer (the temperature is ~60°C) for 2-3 minutes.
- Stick the suction cup to the bottom of the display (near the Home button) and pull up slightly.
- Insert a plastic mediator into the resulting gap and carefully lead along the edge, separating the glue.
- As soon as the display rises, disconnect the plumes: the main (LCD) and touch screen.
Important nuances:
- 🔥 Do not overheat the screen - maximum temperature of the hair dryer 70°C, otherwise damage the matrix.
- 🧲 Display plumes are very short – don’t lift the screen too high.
- 🛠️ If the glue is too strong, use isopropyl alcohol to soften it (apply the drop under the mediator).
💡
If the screen cracks, before removing paste it with tape so that the fragments do not fly and cut the plumes.
Battery Replacement: A Step-by-Step Guide
The battery in the Redmi 6A is one of the weakest parts, and after 2-3 years of use, it loses up to 30-40% of capacity, and the phone suddenly turns off, and battery replacement is the most common reason for disassembling this smartphone.
Here’s how to change the battery without errors:
- Disconnect the battery power plume from the motherboard.
- Warm up the back of the battery (through the lid) for 3-5 minutes. the glue will become softer.
- Carefully tuck the battery with a plastic spatula from any end.
- If the battery fails, drop the isopropyl alcohol under it and wait 1-2 minutes.
- Install a new battery (we recommend the original or analogue from ATL) and connect the plume.
Tips for choosing a battery:
- 🔋 The original battery has a label. BM41 or BM43 (capacity of 3,000 mAh).
- 📦 Alternatives: ATL LB305456 Coslight CL183456.
- ⚡ Calibrate the battery after replacement: completely discharge and charge the phone 2-3 times.
What to do if the battery is swelling?
Common Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when disassembling the Redmi 6A. Here are the most common of them and ways to prevent them:
| Mistake. | Effects of consequences | How to avoid |
|---|---|---|
| Accidental disconnection of the fingerprint scanner plume | A broken plume, a broken sensor | Carefully separate the plume from the lid before removing the board |
| Use of metal tools | Scratches on the body, short circuit | Work only with plastic or wooden blades |
| Dryer overheating | Bloating or ignition of the battery | Keep the temperature not above 60°C, warm in short intervals |
| Loss of screws | Incorrect assembly, backup boards | Use a magnetic tray or stick screws on a scotch |
Another common problem is that the display is broken after assembly.
- 🔌 Unconnected plume LCD touchscreen.
- 🔧 Clutched plume screw metal plate.
- 💥 Static electricity that damaged the display controller.
To avoid this, always check the connection of the plumes before the final assembly and use an antistatic bracelet (or at least touch the grounded object before work).
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The most vulnerable part of the Redmi 6A in disassembly is the fingerprint scanner plume, and its broken contact is impossible to repair, just replace the entire module.
Reverse Assembly: nuances and verification
It seems easier to put the phone back together than to disassemble it, but there are pitfalls, too, and the rule of thumb is to go in reverse, from the motherboard to the back cover.
Here are the key points:
- Make sure all plumes are tightly connected (clicking should be heard).
- Twisting the screws cross-cross so that the fee sits flat.
- Before installing the battery, clean the contacts of the power supply plume with isopropyl alcohol.
- Stick the back cover to a double-sided tape (e.g. 3M 9448A) or use the original glue.
After assembly:
- 🔋 Turn on your phone and check the battery.
- 📵 Make sure that SIM-maps are determined.
- 👆 Test the fingerprint scanner and cameras.
- 🔊 Check the sound of the speaker and vibrator.
⚠️ Warning: If the phone doesn't turn on after assembly, but when connected to charging, the battery icon shows - the problem is the power plume or battery contacts. Disassemble the device and check the connection.