Why the sound on Xiaomi Poco X3 Pro disappeared and how to get it back: the full guide

Sound problems on Xiaomi Poco X3 Pro smartphones are one of the most common user complaints: the speaker suddenly stops working, the sound is distorted, then disappears altogether after the system update, there may be dozens of reasons, from a trivial error in settings to hardware damage, but in 90% of cases, the situation can be fixed by yourself without contacting the service center.

In this article, we’ll look at all the possible scenarios for why your Poco X3 Pro lost sound, from software failures to physical malfunctions, how to check speakers, reset audio settings, bypass MIUI bugs, and even what to do if your phone falls into the water, and for convenience, we’ve compiled step-by-step picture instructions, checklists, and warnings about typical errors.

If you've tried to reboot your phone before and it hasn't worked, don't panic. Most problems are solved in 5-10 minutes. Start with the simplest and gradually move on to more complex methods.

Why Xiaomi Poco X3 Pro is not sound: the main reasons

Before trying to fix the sound, it is important to understand what caused the malfunction, which will save time and avoid unnecessary actions.

On the Poco X3 Pro, sound can be lost for several reasons:

• 🔊 Software failures: errors MIUI, Application conflicts, incorrect sound profile settings.
• 🔄 Hardware problems: damage to speakers, oxidation of contacts, ingress of moisture.
• 📱 Connection problems: faulty 3.5mm connector (if used), Bluetooth conflicts.
• 🔋 Energy saving: aggressive battery settings that disable background processes.

The most common cause is an Android media server malfunction, which is a system process that plays sound back, and if it freezes, the sound can disappear completely or malfunction. Another common problem is the pollution of the speakers, and the dust and debris accumulate in the grilles over time, which leads to muffled or distorted sound.

Also, you can't rule out damage after a fall or impact. Poco X3 Pro has two speakers (bottom and top), and even a slight mechanical impact can disrupt their operation. If the sound is lost after a fall, you will most likely need a diagnosis in the service center.

Checking basic sound settings

Before you commit to hardware malfunctions, make sure that the problem is not the settings. Often users accidentally turn off the sound or activate the "Do Not Disturb" mode.

Start with the obvious:

1. Check the physical buttons: 🔈 Make sure the volume button is not clamped. 🔇 See if the silent mode is activated (the bell icon with cross-out in the status bar).

Settings → Sound and vibration

• 🎵 Media volume level (slider should be above 0%).
• 🔔 Do Not Disturb (should be disabled).
• 🎧 Bluetooth settings (if the sound goes to the headphones, turn them off).

If you use headphones with a 3.5mm connector, try turning them off and checking the sound through the speakers. Sometimes the phone freezes in headphone mode, even if they're already disconnected, in which case rebooting or clearing the Settings app cache will help.

Also note the sound profile. MIUI has several preset profiles (e.g., Outdoors, Homes, Sleep) that can automatically turn down the volume. To reset the profile, go to Settings → Sound and Vibration → Sound Profiles and select Default.

💡

If the sound is only in the headphones, but not through the speakers, try to move the plug in the 3.5 mm connector. Sometimes the contacts are oxidized, and the phone "thinks" that the headphones are connected.

Resetting the sound settings to the factory

If the basic settings didn’t work, the next step is to reset the sound settings to factory settings, which will remove all user volume settings, notifications and profiles.

For reset, perform the following actions:

After reset, check the sound in different applications: player, YouTube, calls. If the problem persists, move to the next method.

Important: Resetting your audio settings does not affect your data (photos, messages, apps) and only deletes:

• 🔊 Custom volume levels for media, calls, alarms.
• 🔔 Notification settings (vibration, melodies).
• 🎧 Bluetooth configuration (you will have to reconnect).

If you have a sound after reset, but it's gone again after a while, it's probably one of the apps you installed that's to blame. Try to remember what software you started having trouble with, and delete it.

💡

Resetting audio settings is the safest way to get sound back without losing data, and if it doesn't work, the problem is deeper: a system failure or hardware failure.

Diagnosis of speakers: how to check the serviceability

If the sound is still missing, you need to check the speakers themselves. On the Poco X3 Pro, there are two: the main (bottom) and the conversational (top), you can test them manually.

Diagnostic methods:

1. Test call: 📞 Call another phone and see if the speaker is working during the call. 🔊 Turn on speakerphone – if there is sound, then the speaker is working.
2. Music reproduction: 🎵 Open any audio in the player and put your ear to the bottom of the phone. 🔇 If there's a sound, but it's very quiet, maybe the speaker grille is jammed.

Special tests

• 🛠️ Enter the dialer code ##4636##, select Equipment Testing" → "Audio and check both speakers.

If one speaker is not working and the other is working, the problem may be:

• 🔌 Oxidation of contacts (often after moisture is ingested).
• 🔧 Damage to the plume (for example, after falling).
• 🎛️ Failure in the sound chip (requires repair).

If both speakers are silent, but the headphones are working, the problem is likely to be the software. If the headphones are not working, it can be a hardware malfunction (for example, the audio codec failed).

Software methods of sound recovery

If the hardware diagnostics didn't reveal any problems, it's probably the software's fault.

1. Cleaning the cache and data of the application "Settings"

Sometimes the cache of system applications can cause a malfunction of the sound, to clear it:

1. Go to Settings → Applications → Application Management.
2. Find the Settings app (or Settings).
3. Click Warehouse → Clear the cache and Clear the data.
4. Reboot the phone.

2. Reset all settings (without data loss)

If cleaning the cache didn’t help, try a full reset (not to be confused with a factory reset!):

1. Open Settings → System and device → Additional → Resetting.
2. Select Reset all settings (this won’t delete your files, but will reset Wi-Fi, Bluetooth, and other settings).

3.Update or rollback MIUI

If the sound is gone after the update, try:

• 🔄 Update to the latest version MIUI (Sometimes bugs are fixed in new builds).
• 🔙 Reverse to the previous version (if the sound worked before the update).

The rollback will require an unlocked bootloader and custom recovery (such as TWRP).This is a risky procedure, so if you are not confident in your abilities, it is better to contact the service.

💡

Before any firmware manipulations, back up your data through Settings → Additional → Backup and Reset!

Hardware malfunctions: when to carry in the service

If none of the software methods worked, it's probably a hardware problem. Here are the signs that the phone needs repair:

• 💧 Moisture: The phone fell into the water, was in the rain, or on the display appeared divorces.
• 💥 Mechanical damage: After a fall or impact, the sound disappeared completely or became hoarse.
• 🔌 Contact oxidation: speakers work, then not (symptom of floating contact).
• 🔊 No sound in headphones: if even through a 3.5 mm jack or Bluetooth sound is not, the problem is in the audio codec.

The most common hardware breakdowns on the Poco X3 Pro:

1. Damage to the lower speaker (most often due to dust or moisture).
2. Detachment of the plume speaker (after falling or heavy heating).
3. Failure of the audio codec (the microcircuit responsible for sound processing).

The cost of repair depends on the problem:

• 🔧 Replacement of the lower speaker: ~1 500–2 500 ₽.
• 🔧 Replacement of the plume: ~2 000–3 000 ₽.
• 🔧 Repair of the audio codec: ~3 500–5 000 ₽ (Sometimes it’s cheaper to buy a new phone).

⚠️ Warning: If the phone falls into water, don't turn it on and try to dry it with a hair dryer! Immediately take it to the service - the faster the chances of saving the device are higher.

If you decide to repair your phone yourself, buy original parts (like a speaker for the Poco X3 Pro with the MDY-007 article).

Frequent questions about the sound on Xiaomi Poco X3 Pro