Why the sound on the Xiaomi phone disappeared: full diagnostics and repair

Did you turn on the video, but no sound is coming from Xiaomi speakers? Or did the calls suddenly become dumb and the notifications stopped vibrating? Sound problems on Redmi, POCO or Mi smartphones are more common than you think — and it's not always the fault of the breakdown. In 60% of cases, the fault is a software failure, and in 30% - the wrong settings. The remaining 10% is due to hardware malfunctions that require the intervention of the service center.

This article will help you to separate the software and hardware causes of lack of sound without going to the wizard. We will break down the typical scenarios from the banal (accidentally pressed the silent mode button) to the exotic (damage to the audio codec after a fall). For each situation, a checklist of actions, risk warnings and alternative solutions. If your Xiaomi is silent like a fish, start with the first section and move along the steps.

1. Checking basic settings: what you might have missed

Before you commit a breakdown, make sure the problem isn't the obvious. Xiaomi manufacturers often hide key switches in illogical menu sections and users accidentally activate them. MIUI 14, for example, has a separate volume controller for media and notifications - it's easy to confuse.

Start with this:

• 🔊 Check the physical buttons: press the volume button on the sidebar. The speaker scale should appear on the screen. If it's not there, the button might have stuck or left the contact.
• 📱 Do Not Disturb Mode: Swipe down from the top edge of the screen and make sure the bell icon is not crossed out. MIUI This mode can block all sounds, including the alarm clock.
• 🎵 Sound Profile: Go to Settings → Sound and vibration → Sound modes. Make sure you don't pick Quiet or Meeting».
• 🔕 Silent mode: on some models (for example, Redmi Note 12) there is a separate switch on the left side of the body.

⚠️ Note: If after the update MIUI The audio is gone, but the speakers are working, the driver of the audio chip is the problem. Don't try to reset the settings to the factory, it can aggravate the failure.

2. Software failures: when MIUI is to blame

Xiaomi's MIUI shell is known for bugs, especially after major updates, and if the sound went missing immediately after installing a new firmware version, one of three components is to blame:

1. Audio Driver – is responsible for the interaction of the system with the speakers and microphone.
2. Media.server service – manages multimedia playback.

How to diagnose:

• 🔄 Reset your phone: press the power button for 10 seconds, 40 percent of the time, it solves the problem.
• 🛠️ Clear the cache of system applications: Go to Settings → Annexes → App management. Click on three dots in the top right corner. → Show system. Find Media Storage and Audio Service, clear cache and data.

Update the firmware

Settings → About the phone → System update

If after these actions the sound did not appear, try to reset the sound settings to the factory:

Settings → System and device → Additional → Resetting settings → Resetting sound settings

⚠️ Attention: On Xiaomi models 12T And a new reset of audio settings can cause an equalizer reset in apps (Spotify, YouTube Music.

3.App conflicts: who is "muffling" your sound

Some applications can block sound at the system level, and most often, the fault is: