Disassembly Xiaomi Redmi Note 8T: a detailed guide with photos and tips

Xiaomi Redmi Note 8T is one of the most popular budget smartphones, but even it is not immune to breakdowns. The screen cracked after the fall? The battery swelled and arched the body? Or just want to clean the device from dust? In any case, disassembling the phone is a task that requires accuracy and knowledge of nuances. This article will help avoid errors that lead to damage to plumes, break contacts or even complete failure of the device.

The Redmi Note 8T (codename willow) has its own features: it has adhesive screen fixation, brittle flexible plumes, and the non-obvious placement of screws under the stickers. We'll take a look at the process from unscrewing the first bolt to removing the motherboard, highlighting critical moments where most newcomers make mistakes, and giving tool recommendations. If you've never taken a smartphone apart, start by reading the training section.

Important: Disassembly will void warranty (if it's still valid) If your Redmi Note 8T is warranty service, you better contact Xiaomi Service Center. For everyone else, go!

Preparation for disassembly: tools and security measures

Before you start a screwdriver, make sure you have everything you need. Inappropriate tools are the main cause of chipped shells, torn screws and torn plumes. Here is the minimum set you'll need:

• 🔧 A set of screwdrivers with bats PH00, Y00 (for screws under the back cover) and T3 (The usual cross screwdriver won't work!
• 📱 Plastic mediators (2-3 pc.) or guitar mediators - to separate the cover and screen.
• 🔥 Dryer or thermo-air station (power of at least 800 W) - for softening the glue.
• 🧲 Magnetic mat or screw container – to avoid losing small details.
• 🔍 Loop or magnifying glass - to inspect contacts and plumes.
• 🧴 Isopropyl alcohol (90%+) — cleaner.

Also, prepare the workspace: it should be well lit, clean and draft-free (dust can get inside the phone); put a soft cloth or rubber mat on the table so that you don't scratch the glass; if you work with a battery, have a class D (for metals) fire extinguisher on hand or sand: lithium batteries can ignite if damaged.

⚠️ Warning: Don't take your phone apart on your lap or couch! The smallest villi from the fabric can get under the screen and cause artifacts on the display or sensor problems. Use a table with a smooth surface.

Before starting work, turn off the phone completely and remove it. SIM-If the battery is bloated, don't try to puncture or bend it. In this case, you should contact the service immediately.

Removing the back cover: how not to break the latches

The back cover of the Redmi Note 8T is attached to glue and plastic latches, and the challenge is not to damage these latches when you separate, and if you act rudely, the lid can crack, and the latches can break, which will lead to a backlash of the body after assembly.

Withdrawal algorithm:

1. Heat the back cover around the perimeter with a hair dryer for 2-3 minutes. Keep the hair dryer at a distance of 5-7 cm so as not to overheat the plastic. The temperature should not be higher than 80 ° C (plastic begins to melt at 100 ° C).
2. Put a plastic mediator in the gap between the lid and the body at the charging connector. Carefully drive it along the edge, separating the glue. Don't use metal tools!
3. When the lid begins to move away, do not pull it sharply - under it are the plumes of the fingerprint scanner and NFC-Unplug them from the motherboard before you completely remove the lid.

If the lid fails, reheat the problem areas. Don't use excessive force, it will lead to cracks. On the Redmi Note 8T, the most vulnerable latches are in the upper left corner (camera side) and the lower right corner (speaker).

Battery shutdown: Why it's critical

Before any manipulation of the insides of the phone, be sure to turn off the battery.Even a smartphone turned off keeps the capacitors voltage on, and an accidental circuit can disable the power controller or processor.

To disconnect the battery:

• 🔋 Find the battery connector on the motherboard (usually white and signed as BATT).
• 🪛 Carefully tuck the connector into a plastic pickup or tweezers!
• ⚡ After turning off, check the voltage on the battery contacts with a multimeter - it should be 0 V.

⚠️ Warning: If the battery is swelling, don't try to remove it yourself. The risk of short circuit and fire is extremely high.

On the Redmi Note 8T, the battery is glued to the body with double-sided tape.

1. Push the battery with a plastic blade on the side where there are no components (usually this is the upper part).
2. Pull on the black traction tape that's glued under the battery, and if you don't have the tape, gently pull the battery around the perimeter, pouring isopropyl alcohol to dissolve the glue.
3. Don’t use metal tools – they can puncture the battery!

Screen Dismantling: Risks and Solutions

Redmi Note screen 8T — It is one of the most expensive parts and it costs to replace it. 30-50% So when you disassemble, it's critical to not damage the plumes and not leave any glue on the glass, and the screen is glued all around the perimeter, and the plumes of the display and the sensor are underneath the battery.

Step-by-step:

1. Warm up the edge of the screen (especially in the area of the control buttons) for 3-4 minutes. The glue under the screen is more resistant than under the lid.
2. Suction cups (or tape) lock the screen and gently pull up. Put plastic mediators in the gap to separate the glue. Don't peel the screen from the side, there are plumes!
3. When the screen rises to the 1-2 Uh, stop and unplug the plumes from the motherboard, and they're latched, and you need to tweez them gently.

Typical errors when taking off the screen:

• 🔨 Use of metal tools → frame-scrap.
• 🔥 Overheating with a hairdryer → detachment of the polarization layer (the appearance of rainbow spots).
• 🤏 Screen twitching → sensor-pipe.

If the screen is cracked but the image is still working, don't turn on the phone without a protective film - glass shards can damage your eyes or fingers. Use transparent tape to safely dismantle it by pasting it across the screen.

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If the glue under the screen is too resistant, apply a few drops of isopropyl alcohol into the slot and wait 1-2 minutes.The alcohol will dissolve the glue, but will not damage the electronic components.

Removing the motherboard: what can be broken

The Redmi Note 8T motherboard is mounted on 12 screws of different sizes and types, and if you confuse them with places when assembled, it can short-circuit or damage the antennas.

• 📸 Take a picture of the location of the screws before extraction.
• 🧩 Use a magnetic mat with cells or signed containers.
• 🔍 Check the length of the screws: for example, the screws in the speaker are shorter than the camera.

Deconstruction procedure:

1. Disconnect all the plumes: the main connector of the board, the camera plume, the speaker plume.
2. Twisted the screws in order from the edges to the center (this will prevent the board from deforming).
3. Carefully tuck the board with a plastic blade. If it does not respond, check if all screws are twisted (often forgetting the screw under the sticker at the end of the car). SIM-tray).

On the Redmi Note 8T, pay special attention to:

• 📡 Antenna contacts (thin golden springs at the edges of the board) are easy to bend.
• 🔌 Charging connector - it is soldered to the board and can come off with careless movement.
• 🎤 Microphone (located next to the charging connector) easy to lose when you remove the board.

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If after disassembly the phone does not turn on, check: is the battery connector connected, is not bent antenna contacts, and is all the plumes connected to the end.

Frequent breakdowns during disassembly and how to avoid them

Even the skilled craftsmen sometimes make mistakes. TOP-5 Problems encountered in the dismantling of the Redmi Note 8T, and ways of preventing them:

1. Torn screws: Reason: Use the wrong screwdriver or excessive force. Solution: If the screw doesn't go, drop WD-40 or alcohol, wait 5 minutes and try again. Don't use pliers!
2. Fracture of the fingerprint scanner plume: Reason: abrupt removal of the back cover without detaching the plume. Solution: Always check if all plumes are disabled before dismantling.
3. Screen flexible plume damage: Cause: overbending or pinching the plume when assembled. Solution: lock the plumes with tape in the correct position.
4. Cracks on glass after heating: Cause: uneven heating or overheating (above 90°C). Solution: Use a thermocouple dryer or an infrared heater.
5. Short circuit after assembly: Reason: forgotten screw under the board or debris hit. Solution: before assembly, clean the case with compressed air.

If there are problems after the disassembly, check:

• 🔌 All connectors are connected (especially batteries and screens).
• 🔋 Is the battery bloated (even a slight bloating can interfere with contacts).
• 📶 Are antenna contacts bent (this affects the network signal).

⚠️ Warning: If the phone warms up, discharges quickly or doesn't turn on after assembly, don't try to charge it. This could be a sign of a short circuit.

Phone Assembly: Reverse Process and Testing

The Redmi Note 8T should be assembled in reverse order, but with a few nuances in mind:

1. Before installing the screen, clean the frame of the old glue with alcohol. New glue (for example, T7000) apply a thin layer, avoiding hitting the speaker and microphone.
2. When connecting the plumes, make sure the latches are fixed - they should emit a slight click.
3. Screw the screws cross-curl to avoid deformation of the board.
4. After assembly, do not turn on the phone right away - wait 10-15 minutes for the glue under the screen to "grab".

Post-assembly testing:

• 🔋 Check charging (plug the cable and make sure the current is going).
• 📞 Test calls and mobile internet (if there is no signal, check antennas).
• 📷 Take a photo on the front and main cameras.
• 🔊 Turn on music – the speaker and microphone should work.
• 👆 Check the sensor and fingerprint scanner.

If something doesn’t work, take the phone apart and check:

• 🔌 Connecting plumes (especially screen and camera).
• 🔋 Battery contacts (possibly oxidized).
• 📡 Antenna contacts (should fit tightly to the board).

If all tests passed successfully – congratulations! You have disassembled and assembled Xiaomi Redmi Note 8T. Now you know its device from the inside and can cope with most repairs without contacting the service.

FAQ: Answers to Frequent Questions