Removing the back cover of a Xiaomi Redmi smartphone is a challenge that owners face when replacing a battery, repairing a camera or cleaning up dust. Despite its apparent simplicity, the process requires care: wrong actions can damage latches, plumes or even the display. In this article, we will examine all the nuances from the choice of tools to step-by-step instructions for the popular models of the Redmi Note, Redmi and POCO series.
Xiaomi's smartphone features are glue and plastic latches to fix the lid. Newer models (like the Redmi Note 12 Pro+) have increased sealing, making it harder to disassemble. Older devices (like the Redmi 4X) are easier to disassemble, but there are pitfalls, and we'll show you how to minimize risks and avoid common mistakes.
What tools will you need
Without the right tools, it's almost impossible to remove the Redmi lid.
- 🔧 Plastic blade (or mediator) - to separate the body without scratches!
- 🔥 Dryer or thermo-air station - heats up the glue (temperature 60-80)°C) Even a household hair dryer at maximum power will do.
- 🧲 Suction cups help lift the lid after heating up. Two are better: to distribute the effort evenly.
- 📱 Screwdriver. T3/T4/T5 — For the spinning of screws (if any) in Redmi Note 10 Pro used screws T3, into POCO X3 Pro — T4.
- 🧴 Isopropyl alcohol (90%+) — acetone or solvents should not be used!
If you plan to disassemble your smartphones often, you should buy a repair kit with a magnetic screwdriver and nozzles. For a one-time procedure, a spatula and a hairdryer are enough. Importantly, do not use knives or scissors - they will scratch the body and can damage the plumes!
Preparing the smartphone for disassembly
Before opening the lid, several mandatory steps must be taken:
Turn off your smartphone and remove it. SIM-map
Remove the cover and protective film (if any)
Charge the battery by 30-50% (in case you need testing)
Prepare the workplace: clean surface, good lighting
Take a picture of the location of the screws (if any)-->
The most common mistake is to try to disassemble a smartphone with the battery on. It's dangerous: short circuits can knock out the motherboard. Also make sure there are no cracks on the case, as they can expand when heated, and if the screen is broken, you better seal it with tape first so that the fragments don't get inside.
⚠️ Warning: Do not disassemble your smartphone on the street or in a dusty room. Getting garbage under the lid can cause problems with speakers or microphone.
If you are disassembling a model with a waterproof body (for example, Redmi Note 11 Pro+ 5G), note that after removing the lid, the leakage will be broken.
Step-by-step instructions: how to remove the cover
The disassembly algorithm depends on the model, but the general scheme looks like this:
- Warm up the glue. Dry dryer the edge of the lid (30 to 40 seconds on each side) Keep the dryer 5 to 7 cm away so that the plastic doesn't overheat.
- Remove the edge of the lid at the charging connector (weakest spot) with a suction cup, insert a plastic shoulder blade and guide it gently around the perimeter.
- Pull the lid off. Pull the scapula down with moderate force, and you can hear the flicks of the reflective latches. Don't pull the lid up, just to the side!
- Check plumes. After removing the lid, check if the plumes (such as a fingerprint scanner) are glued to the lid. In the Redmi Note 8 Pro, it is often soldered to the lid.
For models with an aluminum frame (for example, POCO F3), the process is more complicated: the lid is attached not only to the glue, but also to screws under plugs, which must be carefully tucked and unscrewed with a T3 screwdriver.
What to do if the lid does not lend itself?
| Model | Type of attachment | Features | Difficulty |
|---|---|---|---|
| Redmi Note 12 Pro+ | Glue + latches | Sealed body, fingerprint scanner plume glued | ⭐⭐⭐⭐ |
| Redmi 9A | Latches (no glue) | Easy access, but fragile clips | ⭐⭐ |
| POCO X3 Pro | Glue + screws under stubs | Requires a T4 screwdriver, battery glued | ⭐⭐⭐ |
| Redmi K50 | Glue + metal frame | It is difficult to separate without damage, the plumes are fragile. | ⭐⭐⭐⭐⭐ |
Common Mistakes and How to Avoid Them
Even experienced users sometimes make disassembly mistakes, and here are the most common ones:
- 🔥 Overheating of the body. If you hold the hair dryer too close, the plastic will deform. Optimum temperature is 70.°C (check with your hand: the body should be hot, but not burnt).
- 💥 Sharp separation of the lid, which causes the plumes to break, move the shoulder blade smoothly, without jerking.
- 🔧 Loss of screws at Redmi Note. 10S screws of different lengths - if you mix up, you can damage the motherboard.
- 🧴 Using inappropriate solvents: Acetone corrodes plastic and rubber seals.
In Redmi Note 11 and later, the fingerprint scanner plume is often glued to the lid. If you tear it off, the touch-ID will stop working! Before you separate the lid, check if it has soldered elements on it.
⚠️ Warning: If the smartphone doesn't turn on after disassembly, check the battery and the display plume connection. 60% of the time, the problem lies in the departed connector.
How to close the lid back
Building a smartphone is as important as disassembling it.
- Clean the surfaces. Remove the old glue with isopropyl alcohol. The residue of the glue can interfere with the tight fit.
- Check the plumes. Make sure all connectors are connected (especially the fingerprint scanner and the camera).
- Apply the new glue. Use 3M 9448A double-sided tape or B-7000 liquid glue to keep it tight.
- Close the lid. Start at the top (where the cameras are) and gradually press it against the body so that the glue is evenly distributed.
For models with waterproof housing (Redmi Note 12 Pro)+) After assembly, check the tightness: lower the smartphone in water for 10 seconds (without air leakage). SIM-If you have bubbles, repeat the procedure with new glue.
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If you don't have a special glue, you can temporarily lock the lid with wide tape around the perimeter, which will not ensure tightness, but will prevent accidental opening.
Frequent questions after the disassembly
Once the lid is removed, users often face unexpected problems.
1.The smartphone does not turn on
Reasons:
- The battery or display plume has disconnected.
- Short circuit due to static electricity (always discharge yourself before work, touching a grounded object).
- Damaged motherboard (if the dismantling used a metal tool).
Solution: check all the connectors, try charging, if it doesn't work, go to the service.
2.The fingerprint scanner is not working.
In 90% of cases, the problem is a severed plume. In Redmi Note 10 Pro and later, it is separate from the main plume of the display. ~500–1000 ₽).
3. The lid doesn't fit tightly.
So that means that the glue is unevenly applied or there are gaps left.
- Take the smartphone apart again.
- Clean the surfaces of the old glue.
- Apply a new glue (such as the B-7000) and press the lid tightly for 10-15 minutes.
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If you have any extraneous sounds (squeaking, crunch) after assembly, it means that the lid is deformed or debris has fallen under it. Take apart your smartphone and repeat the procedure.