Removing the back cover of the Xiaomi Redmi Note 8T smartphone is a challenge that owners face when replacing the battery, dynamics or repairing plumes. Despite the apparent simplicity, the process requires caution: the plastic panel is attached to the latches and adhesive layer, and improper actions can lead to cracks or damage to flexible cables. In this article, you will find a step-by-step photo instruction, a list of necessary tools and key nuances that will help to avoid errors.
Redmi Note model 8T (The codename willow is different from the standard Note 8. NFC-module and other arrangement of antenna lines, but the design of the rear panel is identical. If you have not previously been engaged in smartphone repair, we recommend first familiarize yourself with frequent questions at the end of the article β there are broken down typical problems, for example, what to do if the lid does not lend itself or the latches break.
Preparation: tools and modalities
Before you start disassembling, make sure you have everything you need, and using the wrong tools is the main cause of damage to the body or internal components, for example, metal screwdrivers can leave scratches on the plastic, and too thick mediators can break latches.
Here is the minimum set you will need:
- π§ Plastic mediator (or guitar mediator 0.3β0.5 mm thick) β for detachment of the cover.
- π₯ Hair dryer (construction or household with a mode of "hot air") - for softening the glue.
- π© The screwdriver (PH00 or PH0) β screw-twisting.
- π§² Suction (optional) - helps to lift the cover after heating.
- π¦ Container for screws - so as not to lose small details.
Also prepare the workplace:
- πͺ Work at a table with good lighting.
- π§Ή Remove carpets or fabrics β screws are easily lost.
- π Turn off your smartphone and remove it. SIM-card with a memory card (if installed).
β οΈ Warning: Do not use knives, blades or metal objects to separate the lid.Even a small pressure can damage plumes under the lid, especially flexible battery cable or antenna contacts.
Step 1: Heating the cover to soften the glue
The glue that glues the Redmi Note 8T back becomes elastic at ~60β70Β°C. Without preheating, it is almost impossible to separate the lid β you either break the latches or leave traces on the plastic. Use a dryer at medium power, holding it at a distance of 10β15 cm from the body.
Procedure:
- Direct hot air to the edges of the lid (especially around power and volume buttons) for 2-3 minutes.
- Periodically check the temperature of the body with your hand - it should be hot, but not burning.
- Do not hold the hair dryer in one place for more than 10 seconds to avoid melting the plastic.
If you do not have a hair dryer, alternative methods can be used:
- π₯ Warm air from the kettle (less effective, but suitable in extreme cases).
- βοΈ Heat in the sun (in summer, at a temperature higher) +30Β°C) β leave the phone in direct light for 10-15 minutes.
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If the lid still doesn't respond, repeat the heating again, paying attention to the corners, and the glue in these areas often remains hard.
Step 2: Separation of the cover by a mediator
After heating, proceed to a gently separate cover. Start at the bottom edge (near the USB-C connector), where the latch is smaller, and gradually move around the perimeter. Use a plastic mediator, inserting it under the lid to a depth of no more than 2-3 mm - deeper and you risk damaging the plumes.
Step-by-step technique:
- Insert the mediator in the gap between the cover and the case at the USB-C connector.
- Carefully lead it along the edge, swaying slightly from side to side.
- As soon as you hear the characteristic snap of the latch, move to the next section.
- Be especially careful in the area of the volume and power buttons - there are plumes.
If the lid is "sucked" back, use a suction cup (if any) or lock the mediator in one of the corners to keep the slit open.
Make sure all latches around the perimeter are snapped.|Check if the lid is clinging to the battery plume.|Do not pull the lid with force - if it does not remove, warm up again.|Put down the mediator if you feel resistance.-->
β οΈ Warning: If you hear a crack when you're detaching the lid, stop the process immediately. This could mean that the mediator has hit the plume or the latch has broken.
Step 3: Disconnect the battery plume
When the lid is removed, the first thing you need to do is turn off the battery to avoid short circuits, and the power plume is located at the top of the phone (under the metal plate) and is attached to a JST 1.0 connector.
- Carefully tuck the connector with a plastic spatula or nail.
- Pull the black tongue (if any) or simply separate the plume from the nest.
Important: Don't use metal tools to turn off the plume, it can cause a circuit! If the connector is "stiffened", sway it slightly left-right, without making much effort.
What happens if you don't turn off the battery?
Step 4: Removal of the metal plate (if required)
Under the cover of the Redmi Note 8T is a metal plate that covers the connectors of the plumes and screws, it is attached to 5 screws (the size of PH00) and can have additional latches to remove it:
- Unscrew all the screws and fold them in a container (they vary in length!).
- Put the plate around the corner with a plastic spatula.
- Lift it, checking to see if it's clinging to the plumes.
Pay attention to the location of the screws:
| Vint | Length (mm) | Location |
|---|---|---|
| 1 | 3.5 | USB-C connector. |
| 2 and 3 | 2.8 | On the sides of the battery |
| 4 and 5 | 2.5 | Top part (near the camera) |
Donβt confuse screws when back-assembling β using a screw that is too long in the wrong place can damage the board!
Common Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when disassembling the Redmi Note 8T. Here are the most common problems and ways to prevent them:
1. Broken lid latches
Reason: too much pressure from the mediator or trying to tear off the cover without heating.
Solution: If the latches break, use double-sided tape (e.g. 3M 9448A) to lock the lid when reassembling.
2. Damaged battery plume
Reason: careless disconnection of the connector or touching with a screwdriver.
Solution: Before you turn off, take a picture of the plume's location. If the contacts are bent, straighten them gently with tweezers.
3. Scratches on the hull
Reason: use of metal tools or a mediator with burrs.
Solution: Wrap the tip of the mediator with tape or use special plastic blades.
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If you are not sure about your skills, it is better to contact the service.The cost of replacing the back cover of the Redmi Note 8T in the official centers of Xiaomi is ~ 1,500-2,500 rubles (depending on the region).
Reverse assembly: nuances
Building a phone after repair is as important as disassembling it.
- π Check all the plumes before fixing the lid - they should lie flat, without inflections.
- π© Twisting the screws cross-cross to avoid skewing the plate.
- π₯ Heat the adhesive layer before sticking the lid (if using a new tape).
- π± Test the phone to full build: turn it on and check the sensor, buttons, camera.
If you have replaced the battery, calibrate it after assembly:
- Charge the phone to 100%.
- Turn off the charging and use until full discharge.
- Repeat the cycle 2-3 times.