How to replace the speaker on Xiaomi Redmi 4X

Xiaomi Redmi 4X has earned the status of a popular favorite due to the successful combination of price, performance and autonomy. However, time does not spare electronic components, and one of the frequent problems faced by owners of this model after several years of operation, becomes a quiet or wheezing sound in the dynamics. Owners often notice that the interlocutor has become difficult to hear even at maximum volume, and in the tube there are extraneous noises or crackling.

You don't have to run to the service center right away or buy a new device, because in most cases, the problem is solved by simply replacing the speaker module. A conversation speaker is an consumable that is subject to wear and tear of the membrane, oxidation of contacts or banal clogging of the mesh with dust. Self-repair saves a significant amount and returns the device to its former functionality.

In this article, we will discuss the process of fault diagnosis, selection of components and replacement procedure. You will learn what tools you will need, how to carefully disassemble the Redmi 4X body without damage and what to pay special attention to when building.

Diagnostics of malfunction and preparation of tools

Before you start disassembling the device, you need to make sure that the problem lies in the hardware, and not in software failure or contamination of the grid. Often users mistaken software glitch for iron breakdown. First, try to clean the speaker mesh with a soft toothbrush and check the sound in hands-free mode — if everything is working there, then the problem is localized in the upper speaker.

If the cleaning didn't work, you should do a software test. You can run a speaker test on the MIUI menu or with special applications. If you hear a crack, a discontinuous sound or no sound, you need physical intervention. Also, pay attention to the contacts: sometimes the oxidation of the plume or connector on the board causes a loss of signal.

To successfully carry out the repair, you will need a minimum but high-quality toolkit. Using inappropriate items can damage the body or internal components. The screwdriver set must include cross bits of different sizes, in particular the PH000 and PH00.

• 🔧 A set of precision screwdrivers for unscrewing the screws of the body and board.
• 🎴 Plastic blades (mediators) for neat opening of the body without scratches.
• 🌡️ A hair dryer or heating platform to soften the glue under the screen.
• 🧲 Magnetic mat to sort screws so as not to lose them in the process.

Prepare the workspace: it should be well lit and free of foreign objects. Small screws are easily lost, so having a magnetic mat or container with cells is a great solution for organizing the process.

The process of disassembling the Redmi 4X hull

Disassembly of Xiaomi Redmi 4X begins with the removal of the rear cover, which is attached to the two-part glue. This is one of the most important stages, as careless actions can lead to cracks in the glass or plastic frame. Before you start, heat the edges of the body with a hairdryer to a temperature of 60-70 degrees Celsius to soften the adhesive.

It is strongly recommended not to use metal tools to smack the lid, because there is a high risk of damage to the internal plumes or the lid itself. A plastic blade or suction cup is your best assistant in this matter. Move slowly along the perimeter, gradually increasing the gap.

Once you remove the lid, you'll see the inside of the smartphone, you'll immediately need to turn off the battery plume to turn off the system, and then you'll unscrew the screws that lock the plastic safety slats over the main connectors.

It's important to remember the location of the screws of different lengths. Redmi 4X uses multiple size screws, and if you confuse their places when you build them, you can damage the thread or punch the board with the tip of a long screw, photo capture each stage or use a magnetic mat with markup.

⚠️ Attention! When you unplug the back cover, don't make sharp jerks. There may be button plumes or antenna wires under the glass that are easy to break when you move carelessly.

Dismantling the battery and access to the board

The battery pack in the Redmi 4X is glued to the body fairly firmly, which is the standard for modern smartphones. It also requires heating to extract it, but on the front side or tidying with special blades on the back side after removing the board.

After the battery is turned off and the plastic pads are removed, you need to disconnect all the plumes that go to the motherboard: this is the display plume, button plumes, the sub-board flex that connects the upper and lower parts of the smartphone, and antenna cables.

An antenna wire requires special care: its connector is very small and fragile. You can not pull the wire itself, you need to carefully tweez the metal tip with tweezers or nails. Damage to the antenna will lead to deterioration of the communication quality and GPS operation.

And if you unscrew all the screws that hold the motherboard, you can take it out of the case. The board sits tight, so use a suction cup or a plastic blade to lift it up without putting too much effort. Under the board, you'll see a speaker sitting at the top of the case.

• 🔋 Turn off the battery plume first for safety.
• 📱 Disconnect the display plume and touchscreen carefully, without jerks.
• 📡 Remove the antenna cable, holding only the metal connector with tweezers.
• 🔩 Unscrew all the screws of the board perimeter before extraction.

Replacement of the Speaking Dynamic

The speaker speaker in the Xiaomi Redmi 4X is a separate module that is attached to the case or pressed with a frame. Unlike some other models, it is not built into the plume here, which makes it easier to replace it, and once the motherboard is removed, access to it becomes open.

First, you need to disconnect the speaker connector from the board, if it's still connected, or from the bottom board through the plume jumper. Then carefully remove the old speaker from the seat, often held on double-sided scotch or simply inserted into the slots with tension.

Clean the seat of old glue, dust and dirt. Use a soft brush or toothpick. Contacts on the speaker itself and the return nickels on the body must be clean and shiny to ensure quality connection.

Install the new speaker, making sure it sat in the right slots and contacts match. If the new speaker comes with duct tape, use it to fix it. Don't stick it dead unless you need to, as vibration when ringing can tear off the weak glue.

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When installing a new speaker, make sure that the rubber gasket (if any) fits tightly to the body, ensuring that the sound wave is tight and correctly directed into the ear canal.

Device assembly and initial start

The assembly is done in reverse order, but it requires care. First, you put the motherboard in its place. Make sure all the screw holes match and the board is not skewed. Twisted the locking screws, but don't drag them over so you don't break the thread in the plastic.

Connect all the plumes: display, touchscreen, main board, buttons and antenna. Pay special attention to the plume of the main board (sub-board flex), which runs through the entire body. It must lie flat, without clamps and tension, otherwise there may be problems with the microphone or charging.

Before you put the back cover in, make sure you plug in the battery and check the smartphone's performance. Turn on the device, check the speaker, the vibration response and the sensor, and if everything works correctly, you can turn off the battery, put the lid in place and glue it.

To fix the back cover, use a special glue B-7000 or T-7000, or ready-made adhesive frames. Apply a thin layer of glue around the perimeter, press the lid and lock the smartphone with rubber bands for 15-20 minutes before the initial grasp.

⚠️ Attention, don't turn on your smartphone unless you're sure the battery plume is connected correctly, and a connection error can cause the motherboard's power controller to burn.

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Quality assembly depends on the cleanliness of the contacts and the absence of debris under the plumes, even a hair or a speck of dust can cause a broken touch screen or a bad signal.

Frequent errors and troubleshooting

Even when you follow the instructions, beginners can make mistakes, and one of the most common is that the touchscreen plume is damaged when the lid is unplugged, and if the sensor doesn't work after assembly, check the integrity of the plume and the density of the plume to connect to the connector.

Another problem is the lack of sound after replacement, in which case, check if you have removed the protective film from the new speaker (if any), and check the sound settings in Settings → Sound and vibration, making sure that you do not need to limit the volume or the “Vibration Only” mode.

Sometimes after assembly, the smartphone does not see SIM-This could be due to improper stacking of the antenna cable or damage to the connector of the lower board, check if the connector of the antenna is tightly seated and if the cable is intact.

• ❌ Do not use superglue to fix the lid – it corrodes plastic and makes re-disassembly impossible.
• ❌ Do not ignore screws of different lengths - this can cause damage to the board.
• ❌ Do not turn on the phone with the disconnected vibration unless the design suggests it (rarely, but it happens).

If you're in a situation where the phone turns on but the screen is black, you may not have connected the display plume well. Try reconnecting it. If that doesn't work, you may have damaged the display itself or its plume during the disassembly process.

Conclusion and recommendations on care

Replacing the speaker with the Xiaomi Redmi 4X is a home-solvable task with minimal experience and tools, and the key to success is accuracy, lack of rush and attention to detail, and properly repaired, your device will last for several years.

After replacement, it is recommended to avoid moisture in the speaker area, as new seals may not be as effective as factory ones. Regular cleaning of the speaker mesh with a soft brush will help prevent recurrence of sound problems in the future.

Remember that using original or quality parts can have a direct impact on the outcome, and cheap speakers can quickly fail or produce low-quality sound, nullifying all your efforts.