The interior of modern Xiaomi smartphones is a complex engineering system where each component is connected to the motherboard through special flexible conductors. When users search for information about where the plume in the phone is, they are most often faced with the need to diagnose a malfunction of the display, microphone or switch on button. Understanding the architecture of the mobile device is critical before starting any manipulation, since careless movement can lead to the breakage of current tracks or damage to contact platforms.
The location of the connectors varies depending on the series of smartphones: in the budget models of Redmi and POCO layout is often more free, while in the flagship Mi and Xiaomi series of numbers, the elements are packed as tightly as possible. Flexible cables (FPC - Flexible Printed Circuit) can pass under metal shielding plates, battery or be hidden behind the camera module. That is why visual inspection without first studying the disassembly scheme of a particular model can be useless or even dangerous to the integrity of the gadget.
The main purpose of any repair or replacement of a component is to get to the connection point without damaging neighboring nodes. In Xiaomi smartphones, the plumes are responsible for transmitting video, audio stream, charging current and sensor data. If you plan to repair yourself, you need to clearly imagine what kind of conductor you need, since there can be 5 to 12 pieces in the device, and they all have different configurations and lengths.
Types of plumes and their purpose in Xiaomi smartphones
Before you start disassembling, you should classify the main types of connections used by Xiaomi engineers. Display plume is the widest and most important, it transmits a video signal and is responsible for the operation of the touchscreen. It is usually reinforced, but it is extremely sensitive to clamps. Charging plume (sub-pay) connects the lower board with the main motherboard and often fails when the device falls, because it experiences maximum mechanical loads.
Special attention should be paid to thin conductors that go to the side buttons, the front camera and the speaker. They are often integrated into a common tourniquet or go in separate thin tapes. Antenna plumes (coaxial cables) also play a crucial role in providing communication, and their damage leads to loss of network signal or Wi-Fi. It is important not to confuse them with ordinary flat plumes, since they have a round cross section and require careful handling of connectors.
What are the different types of Xiaomi series?
Each type of connection has its own marking and layout on the board. An identification error can lead to an attempt to connect an incompatible component, which is guaranteed to cause a short circuit. Below is a table that helps identify the main types of plumes by their appearance and function.
| Type of plume | Location. | Function | Risk of damage |
|---|---|---|---|
| Display (Display) | Top of the pay | Transmission of image and touch signal | Tall (wide, easy to break) |
| Charging (Sub-board) | Lower part (through the body) | Charging, microphone, speaker | Medium (often rubbed) |
| Buttons (Side Keys) | Side-face | Turn on, volume | Low (short, protected) |
| Cameras (Camera) | Top corner of the board | Transmission of photo/video data | Critical (very subtle) |
Location of the display plume and touch screen
The search for the answer to the question of where the plume in the Xiaomi phone is located most often begins with a screen diagnosis. In the vast majority of models, whether it is the old Redmi Note or the new Xiaomi 13, the display connector is located at the top of the motherboard, but access to it is almost always blocked by a metal protective plate that is screwed or fixed by latches.
To get to the right piece, you need to carefully remove the back cover (if it's glass or plastic) and unscrew all the visible screws around the perimeter of the case. The metal screen protects not only the connectors, but also the processor from electromagnetic interference. Under this plate, you'll see several connectors: the widest of them, usually located closer to the center or upper edge, and there's a place for the display to connect.
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Before turning off the display plume, be sure to de-energize the phone by disconnecting the battery first. Connecting or disabling the screen plume under voltage can burn the power controller on the board.
In some models with curved screens, the plume can go under the frame of the case, wrapping around the battery, in such cases, it requires a complete dismantling of the battery to replace or reconnect it, which greatly complicates the procedure. Beware: display connectors often have locks that need to be bend with a plastic blade, rather than pulling with your fingers.
Turn on and volume button plumes
The side control buttons in Xiaomi smartphones are connected to the motherboard through separate thin plumes or through a common side frame plume. The location of this element depends on the design: in classic models, the plume goes from the button directly to the connector on the side of the board. In more complex designs, the buttons can be part of a single module with a power button.
If the power button fails to respond, the problem may not be in the mechanism itself, but in the contact point of the plume with the board. Oxidation or contact failure is a common cause of malfunction. To check, you need to remove the side frame or the main module and visually inspect the condition of the flexible conductor, which looks like a narrow strip, often orange or black.
Replacing this component requires high precision. The button plume is very short, and any extra movement with tweezers can cause it to break. When assembled, make sure that the plume does not fall under the screw of the frame mount, otherwise it will be squeezed when tightened, which will lead to repeated breakage in a short time.
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The button plume is one of the shortest in the system, its replacement requires a firm hand and no trembling of the hands, since the margin of length for maneuver is minimal.
Camera and multimedia connectors
The camera modules in Xiaomi phones are connected through specialized plumes that differ from displays by fewer contacts but more sensitivity. The main plume of the rear camera is usually located at the top of the board, next to the screen connector. The front camera can have its own conductor or be integrated into the speaker plume.
The peculiarity of chamber plumes is that they often do not have a rigid locking, but are kept by a tight fit in the connector (press-fit) or have very fragile latches. Careless extraction can break the plastic base of the connector on the board itself, which will require soldering of a new connector.
Audio loops that go to the main speaker (polyphonic) are often combined with antenna pins. In modern Xiaomi models, these elements can be combined into a single flexible circuit board that wraps around the perimeter of the case, this is done to save space and improve signal reception.
- 📸 The main camera module: wide flat plume in the upper area of the board.
- 🤳 Front camera: a thin plume often coming from the top speaker.
- 🔊 Dynamic: Can be connected via a separate connector or through a charging plume.
- 🎤 Microphones: often soldered at the ends of button plumes or charging.
Sub-payment and charger plume
One of the most laden nodes is the connection between the main board and the subboard, where the charging connector is located. The charging plume in Xiaomi phones runs through the entire body, often bending the battery, which is most often affected by falls, as it experiences constant tension and vibration.
In non-removable models, this plume can be glued to or underneath the inside of the battery, requiring the battery to be replaced, which increases the risk of damage. In older Redmi models, this plume is easier to access, and it lies in a special groove along the edge of the body.
⚠️ Attention: The charging plume transmits high currents. If you notice a connector blackening or insulation melting, do not attempt to insulate it with tape. Complete replacement of the component is required, otherwise fire or failure of the power controller may occur.
☑️ Checking the charging plume
When installing a new plume, it is important to properly fit it into the channels of the case. If the plume does not fall into its groove, it will be transmitted by the body or battery, which will lead to a rapid fracture of the conductive veins. Use original or qualitative analogues, since cheap copies often have the wrong geometry.
Algorithm for Safe Trail Replacement
The process of replacing any plume in Xiaomi begins with a complete diagnosis. Make sure that the problem is in the conductor, and not in the module itself (screen, camera) or software failure. After that, you should prepare the workplace: a clean desk, good lighting, a set of screwdrivers (crosses, stars), a plastic spatula and tweezers.
The first step is always to turn the device off. Then, by heating (if the back cover is glue-on) or by putting on a slack (if there are latches), the back panel is removed. Then all the screws visible on the surface are twisted out. Plastic latches around the perimeter of the body are neatly snapped with a blade. Do not use force, plastic in Xiaomi is fragile and can crack.
When the body is opened, the first thing you do is turn off the battery, and then you can touch the plume connectors after it's turned off, and then you can carefully bend the lock (if you have one), and pull the plume upwards without swinging it from side to side, and you can put the new one in reverse order, so you put it in the plug before you click, and then you close the lock.
Procedure:
1. Turn off the phone.
2. Remove the back cover.
3. Unscrew the frame screws.
4. Disconnect the battery.
5 Remove the metal plate of connectors.
6. Disconnect the faulty plume.
7. Connect a new plume.
8. Collect in reverse order.Frequent mistakes when working with plumes
The most common mistake is to try to turn off the plume by pulling it by the middle, which leads to layers and breaks in the inner paths, you only need to take the plume by the hard end (amplifier), if you have one, or gently tweez the edge with tweezers.
The second mistake is ignoring the dust and debris in the connectors. The villi between the plume and board contacts can cause the device to work unstable. Blow the connectors with compressed air before installing a new component or gently clean with a dry soft brush.
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Use only plastic or titanium tools to work with plumes. Metal tweezers can accidentally close contacts on the board under voltage (if you forgot to turn off the battery) or damage the insulation of the plume.
The third mistake is to pull the screws of the metal plates, and to push too hard can push the plume through, and to break the integrity of the plume, and to twist the screws evenly, without fanaticism, just to the point.