How to disassemble Xiaomi Redmi 9C yourself: instructions with photos and nuances

Xiaomi Redmi 9C is one of the most popular budget smartphones of the brand, but even it is not immune to breakdowns. The screen does not respond to touch, the speaker wheezes, or the battery suddenly swells? In most cases, repairs will cost less if you disassemble the device yourself. However, improper disassembly can lead to damage to the plumes, disconnection of contacts or even complete failure of the phone.

This article provides a step-by-step guide with photos and videos, what tools you'll need, how to avoid common mistakes, and what to do if something goes wrong. We'll also tell you when it's best to trust a service center to disassemble, and when you can do it yourself. If you've never disassembled a smartphone before, don't worry: the Redmi 9C is a device with medium disassembly complexity, and even a beginner can handle it with accuracy.

Preparation for disassembly: tools and security measures

Before you start, make sure you have everything you need, and not even one tool can make it difficult or cause damage.

• 🔧 Plastic blades (2-3 (a) - for the careful liding and disconnection of the plumes.
• 🔨 Cross screwdriver (PH00 or PH0) — hull-rotor.
• 🧲 Magnetic mat or tray – so as not to lose small details.
• 🔥 Hair dryer or thermal air station - to soften the glue (if the cover does not lend itself to the adhesive).
• 📱 Screen suction cup - will help to gently raise the display.
• 🧴 Isopropyl alcohol (90%+) — glue-cleaner.

Also, prepare your workspace: it should be well lit, without carpets or frill surfaces (small screws are easily lost), and if you work on a desk, you should put white cloth or paper, so the details will be more visible.

⚠️ Warning: Do not use metal blades or knives to lid the lid! They can damage plastic latches or plumes. If the plastic blade does not cope, warm up with a dryer (temperature not above 60)°C), but do not overdo it - overheating can deform the body.

Step 1: Removing the back cover

The first and most important step is to separate the back cover, and on the Redmi 9C, it's attached to glue and plastic latches, so you have to be careful.

1. Turn off your smartphone and remove the tray for SIM-map.
2. Warm up the perimeter of the edge of the lid with a hair dryer (30-40 seconds on each side) and this will soften the glue.
3. Insert a plastic spatula into the gap between the lid and the case (start with the lower right corner where the tray is) SIM-map).
4. Carefully drive the blade along the edge, separating the latches, and if you feel resistance, don't push harder, but warm up the area again.

When the lid is lifted, don't remove it completely, it's still held on the fingerprint scanner plume (if you have one in your version), and carefully disconnect the plume by shoveling it with a spatula behind the motherboard connector.

Step 2: Shutting off the battery

When you remove the lid, first of all, turn off the battery, which will prevent short circuits from further disassembly, and on the Redmi 9C, the battery connector is at the top of the board and is covered with black safety tape.

Carefully tuck the tape and unplug the plume with a plastic blade. Don't pull the wires, you can tear the contacts off! If the plume is stuck, drop a little isopropyl alcohol on the connector and wait 10-15 seconds.

⚠️ Warning: If the battery is swelling (the lid is "pulling"), do not try to remove it yourself - risk of fire! In this case, immediately carry the phone to the service.

Make sure the phone is turned off

Remove the back cover

Find the battery connector (top of the board)

Push the safety tape.

Carefully remove the plume with a plastic spatula-->

Step 3: Removing the motherboard

Now you can start removing the motherboard, which is mounted on multiple screws (usually 8-10 pieces) and connected to the body with many plumes, and your task is to gently disconnect all the connectors before you unscrew the screws.

Procedure:

1. Disconnect the plumes in that order: 📱 Display (widest plume, right). 🔊 Speaker and microphone (thin plumes at the bottom of the board). 📷 Camera (top, next to the battery connector). 🔋 Power and volume button plume (left side).

Turn all the screws (they can be of different lengths - remember where you were!).

Carefully raise the margins. If it doesn't lend itself, check if all the plumes are disconnected.

If you're disassembling a phone to replace a display or battery, you don't have to remove the motherboard completely -- you just have to disconnect the plumes, but if you need to repair the board (like replacing the charging connector), you have to take it out completely.

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Take a picture of all the plumes and screws before you disconnect them, and when you assemble them, you can avoid errors, and you can also place the screws on a magnetic mat in order to twist them.

Step 4: Screen removal (if required)

Replacing the display with a Redmi 9C is one of the hardest things to do. It's glued to the frame, and underneath it are the plumes of the sensor and the display, which are easily damaged. If you've never done that, you better practice on a non-working phone or watch a video manual.

Procedure:

1. Warm up the edge of the screen with a hair dryer (temperature 50-60°C).
2. With a suction cup, gently lift the display from the bottom edge (where the Home button, if any).
3. Insert a plastic blade into the slot and slowly lead it along the edge, separating the glue.
4. When the screen rises by 1-2 mm, disconnect the plumes of the display and sensor (they are under a metal cover, which must be pre-unscrewed).

For example, replacing the screen in the service will cost 3-5 thousand rubles, and buying a display yourself - 2-3 thousand If the difference is small, it is better to trust professionals, especially if you have no experience.

If you decide to disassemble the phone yourself, but something went wrong (for example, after the assembly does not work the camera or battery is not charged), do not try to “finish” the repair – contact the service with the already disassembled device. This will save the master time, and you – money.

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