How to disassemble Xiaomi Redmi 9T: detailed instructions with photos and warnings

Xiaomi Redmi 9T is one of the most popular budget smartphones, but even it is not immune to breakdowns. Whether it is a broken screen, a dead battery or a faulty speaker, sooner or later the owner has to think about disassembling the device. However, improper dismantling can lead to damage to the plumes, cracks on the board or complete loss of functionality.

In this article, you'll find a step-by-step guide to disassembling the Redmi 9T, taking into account all the nuances from tool preparation to motherboard extraction. We'll also tell you what hidden latches and adhesive tapes beginners often miss, and how to avoid typical mistakes. If you've never taken a smartphone apart before, don't worry: with the right approach, even a beginner can cope in 30-40 minutes.

Preparation for disassembly: tools and precautions

Before you start, make sure you have everything you need, and not even one tool can complicate the process or cause damage.

• 🔧 Plastic mediators (2-3 pieces) - for careful slashing of the lid and plumes.
• ⚙️ The screwdriver (PH00 or PH0) — rear-cover.
• 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
• 🧲 Magnetic mat or container – to avoid losing small screws.
• 📱 Suction - will help to separate the screen from the body (optional).
• 🛠️ Tweezers – for working with plumes and small details.

If you are planning to replace the battery or screen, buy a B-7000 glue or double-sided tape to fix new components, and prepare isopropyl alcohol (90%+) to remove the glue residue from the case.

⚠️ Warning: Do not use metal tools to lid the lid! Even a small scratch on the aluminum case can become a hotbed of corrosion.

Before disassembling, be sure to turn off the smartphone and remove SIM-If the battery is swelling, don't try to disassemble the device yourself, because the risk of fire is too high.

Step 1: Removing the back cover

The Redmi 9T back cover is attached to glue and latches. To remove it, you need to warm the body evenly around the perimeter. Use a hair dryer at minimum power, holding it at a distance of 5-7 cm from the smartphone. Don't overheat - temperatures above 80 ° C can damage the battery or screen.

After warming up:

1. Place the suction cup at the bottom of the smartphone (near the USB-C connector).
2. Pull up carefully, creating a small gap.
3. Insert a plastic mediator into the slot and slowly lead it along the body, separating the latches.
4. Repeat the procedure on all four sides until the lid is completely removed.

If the lid fails, warm it up again. Do not apply excessive force, this can lead to cracks in the plastic or damage to antenna lines (they are located along the perimeter of the body).

Warm up with a hair dryer for another 1-2 minutes |

Try to start from the other corner |

Use the second mediator for uniform pressure|

Check if there are any undetached latches left.-->

⚠️ Attention: On Redmi 9T There's a flexible fingerprint scanner plume underneath the back cover, and if it's damaged, it'll stop working!

Step 2: Shutting off the battery

When you take the lid off, first thing you do is turn off the battery.

1. Find the battery connector (usually located at the bottom of the board, next to the vibrator).
2. Carefully tuck the black connector with a plastic mediator and disconnect it from the motherboard.

If you don't turn off the battery, you risk short circuits as you disassemble it, and you can also protect the board from static electricity.

If the battery is blown up, don't try to remove it, it's dangerous, and then you better call the professionals, and if the battery is normal and you're changing it, remember that the new battery must be the same capacity (6000 mAh), otherwise the smartphone may not work properly.

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Before removing the battery, take a photo of the location of the plumes and screws - this will help to avoid errors during assembly.

Step 3: Removing the motherboard

The Redmi 9T motherboard is mounted on 10 to 12 screws of different lengths, remember the location of each one, if you mix it up, you can damage the board or the case, and we recommend that you place the screws in order on a magnetic mat.

After the screws are unscrewed:

1. Carefully tuck the board with a plastic mediator.
2. Disconnect all plumes (screen, camera, power button, USB-C socket).
3. Raise the board at an angle of 30-45° and remove it.

At this point, it's easy to damage the flexible plumes, especially the display and the cameras, which are very fragile, so don't pull them by the wires, you better gently tuck the connectors in with tweezers.

⚠️ Attention: On the Redmi board 9T There's a metal screen that covers the chips. Don't try to remove it, it's soldered and not designed to be dismantled without special equipment.

Step 4: Dismantling the screen and other components

If you need to replace a screen, speaker, or camera, follow the following algorithm:

• 📺 Screen: Warm up the hair dryer around the perimeter (temperature 70)°C), then gently tuck it in with a plastic mediator. The screen is attached to duct tape, so separate it slowly, starting at the bottom corner.
• 🔊 Speaker: Sticked to the body. Tap it with a mediator, then clear the landing site of the glue residue with alcohol.
• 📷 Camera: Unscrew the 2 to 3 screws, then carefully remove the module. The plume is very thin - don't overbend it!
• 🔋 Battery: Put the duct tape under the battery and slowly pull the tongue. If the tape breaks, use isopropyl alcohol to dissolve the glue.

When changing the screen, look for a display model. Redmi 9T is suitable screens with the designation JDI NT36672A or BOE NT36672A. If you install a non-compatible model, you may have problems with color calibration or sensor.

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When assembling a smartphone after replacing the screen, be sure to check the touchscreen and the proximity sensor until the final fixation of the cover.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling the Redmi 9T. Here are the most common of them:

• 🔥 Overheating of the case - leads to deformation of the plastic or damage to the battery. The optimal temperature for softening the adhesive is 60-80°C.
• 🔧 Loss of screws at Redmi 9T They use screws of different lengths, and if you mix them up, you can damage the board.
• ⚡ Short circuit – occurs if you do not turn off the battery before working with the board.
• 📱 Train damage -- most commonly, screen and camera plumes are affected. Always pull the connectors on the side instead of pulling the wires.

Another common problem is incomplete assembly, such as forgetting to plug in a fingerprint scanner plume or a vibrator, and to avoid that, check all the connectors before you finally lock the lid.

If after the assembly of the smartphone does not turn on, check:

1. Is the battery on?
2. Is the motherboard damaged (look for blackened elements).
3. Are all the sleeves properly installed?

Build a smartphone: the reverse order of action

To assemble Redmi 9T need in reverse order, but taking into account a few nuances:

1. Before installing the back cover, check the operation of all components (screen, camera, speakers, buttons).
2. If you have replaced the battery, calibrate it: completely discharge, then charge to 100% without interruptions.
3. Use double-sided tape or B-7000 glue to fix the lid, and apply it in a thin layer to avoid excess.
4. Twisting the screws cross-cross to evenly distribute the pressure on the body.

After assembly, turn on the smartphone and check:

• Does the touchscreen work (are there no dead zones)?
• Whether the colors are displayed correctly on the screen (whether there are yellow or broken pixels).
• Are the cameras, speakers and microphones functioning?
• Is the device charging (check the USB-C connector).

⚠️ Note: If after assembly the smartphone overheats or discharges quickly, most likely, you have improperly connected the battery or damaged the board.

FAQ: Frequent questions about the dismantling of Xiaomi Redmi 9T