Where is the speaker on the phone Xiaomi Redmi 9 Pro: location, inspection and repair

Xiaomi Redmi 9 Pro is a popular smartphone with a balance of price and functionality, but even it can have problems with sound over time. If you notice that the speaker has become quieter, wheezing or stopped working, the first thing you need to do is determine its exact location. In this article, we will analyze where the speaker in the Redmi 9 Pro is, how to check it, clean it and what to do if the sound is lost only in certain situations.

Many users confuse the speaker with a microphone or a conversational speaker (which is used during calls). In the Redmi 9 Pro, the design is typical for most Xiaomi mid-range smartphones, but there are nuances. For example, the model is equipped with two speakers - a main (multimedia) and a conversational one - and their location affects the diagnosis of malfunctions. We will also consider how to distinguish hardware from software and when to contact the service.

Xiaomi Redmi 9 Pro: where to look for speakers

The Redmi 9 Pro has two speakers, and each has its own function:

• 🔊 The main speaker, which is responsible for playing music, sounds in games, videos and notifications, is located on the lower end of the case, to the right of the connector. USB-C.
• 📞 Talk speaker -- used only during calls, at the top of the screen, under the grid next to the front camera.

It's important to understand that a speaker isn't designed to play music -- its power and frequency range are limited, and if you hear sound from the top of the phone while listening to songs, it's likely that the speaker mode is on or there's a malfunction in the main speaker.

On the bottom end of the Redmi 9 Pro are also located:

• 🔌 Connector. USB Type-C (centre).
• 🎤 Microphone (left of connector).
• 🔈 Main speaker (right of the connector, under the grille).
• 📶 Antenna lines (sides).

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If you're not sure which speaker is not working, try calling your phone. If it's coming from the top, it's a problem with the multimedia speaker. If it's quiet or not, it's a faulty conversational speaker.

How to visually determine the location of the speaker

To accurately identify the speaker, check out the Redmi 9 Pro case:

1. Turn the phone down, and on the bottom end, you'll see the symmetrical grids on the sides of the connector. USB-C.
2. The right grille (if you look at the screen) is the speaker, the left is the microphone (sometimes there is a second microphone for noise cancellation).
3. Hold the phone to your ear while playing music – the sound should come from the right grille.

If the grille is contaminated or clogged with dust, it can cause muffled sound. 80 percent of the time, the sound problems in the Redmi 9 Pro are due to clogging the speaker, not to breaking it, and the dust, the pile, or the moisture, gradually build up inside, causing the acoustics to deteriorate.

Testing of the operability of the speakers

Before disassembling the phone or carrying it to the service, perform a diagnosis:

Call the phone – the sound should come from the top speaker|

Turn on the music – the sound should come from the bottom speaker|

Check the volume in the settings (Settings) → Sound)|

Turn off Bluetooth headphones (they can block sound)|

Restart your phone (sometimes helps with software failures)

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If the sound is completely absent:

1. Connect the headphones – if they have sound, the problem is the phone’s speakers.
2. Try playing audio through another player (for example, VLC standard).
3. Run the sound test through the engineering menu: ##4636## → "Testing of equipment" → "Audio"

If the speaker is working but the sound is quiet or distorted:

• 🧹 Clean the speaker grille with a soft brush (such as a toothbrush).
• 🔇 Check if Do Not Disturb or Quiet Mode is enabled".
• 🔄 Update the firmware - in older versions MIUI were sound bugs.

Once a month |

Once a year |

Only when problems arise|

Never cleaned.-->

Cleaning dynamics: step-by-step instructions

If the speaker gets clogged with dust, you can clean it yourself.

• 🪥 Soft toothbrush (new or clean).
• 🧲 Magnet (optional, but will help remove metal dust).
• 💨 Compressed air container (optional).
• 🔦 Lantern (for illumination).

Step-by-step action:

1. Turn off your phone to avoid accidental tapping.
2. Put a flashlight to the speaker grille, so you can see the pollution better.
3. Carefully sweep the brush along the grille (not across) so as not to damage the membrane.
4. If there is a can of compressed air, short queues (no more than 1 second) blow the grille from a distance of 5-10 cm.
5. Repeat the procedure 2-3 times, then check the sound.

⚠️ Warning: Do not use sharp objects (dental cleansers, needles) - they can damage the speaker membrane. Also avoid wet wipes: liquid can leak inside and cause corrosion.

If the sound has not improved after cleaning, the problem may be:

• 🔊 Membrane damage (requires a replacement speaker).
• 🔌 Contact oxidation (you need to disassemble the phone and clean with alcohol).
• 🤖 Software failure (will help reset settings or flashing the firmware).

Typical speaker malfunctions in the Redmi 9 Pro

According to the experience of repair services, the following problems are most common in Redmi 9 Pro:

If the phone falls or has been exposed to moisture, there is a high probability of mechanical damage, in which case self-repair is not recommended - it is better to contact a service center.

• 💧 Divorces appeared on the screen (liquid got on the screen).
• 🔧 Body deformed after impact.
• 🔥 The phone overheats when playing the sound.

⚠️ Note: In the Redmi 9 Pro models with NFC The antenna is located next to the speaker, and when you disassemble the phone, it's easy to damage it, which will lead to the loss of contactless payment.

Programmatic reasons for lack of sound

It's not always the hardware that's the problem.

• 🤖 Failure in the firmware (especially after the update) MIUI).
• 🔇 Incorrect settings (for example, activated "monosound").
• 🎵 Application conflict (some players block system sound).

How to fix software malfunctions:

1. Go to Settings. → Sound and check: Media volume level, Do Not Disturb turned off. Dynamic Sound Optimization turned on (can distort sound).

Settings → System → Resetting settings → Resetting sound settings →

Settings → About the phone → System update

If the problem occurs after installing the app, remove it.

If the sound is only lost in specific apps (like YouTube or TikTok), try:

• Clear the app cache (Settings → Apps → [Title] → Clear the cache).
• Reinstall the problem app.
• Check the app's permissions to access the microphone and speakers.

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30% of Redmi 9 Pro’s lack of sound is due to bug MIUI 12.5–13 Updating to the latest version or rolling back to stable firmware solves the problem.

When a dynamic replacement is required

If all previous methods have failed, the speaker is likely to have failed and needs to be replaced.

• 🔇 Total lack of sound (even after cleaning and resetting).
• 🔊 Wheezing or cracking at any volume.
• 💥 Visible damage to the membrane (if you take the phone apart).

The cost of replacing the speaker in the Redmi 9 Pro:

• 🏥 Service center: 1,500–2,500 ₽ (job-provided).

If you decide to replace the speaker yourself, you will need:

• 🔧 Setting screwdrivers (PH00, Y00).
• 🧲 Screen suction cup.
• 🔥 Fryer (for softening glue).
• 📦 New speaker (order from Aliexpress or in trusted stores, such as Xiaomi Shop).

⚠️ Warning: If you replace yourself, you lose the warranty (if it is still valid), and there is a high risk of damage to the battery plume or display - in the Redmi 9 Pro they are very fragile.

Step-by-step instructions for replacement:

1. Turn off the phone and remove it. SIM-map.
2. Heat the lower part of the body with a hair dryer (no higher than 60).°C) to soften the glue.
3. Carefully tuck the back cover with a plastic spatula.
4. Unscrew the screws holding the metal plate over the speaker.
5. Disconnect the speaker plume and remove it.
6. Install a new speaker, assemble the phone in reverse order.

FAQ: Frequent questions about the speakers at Redmi 9 Pro