Set up the sound of notifications on Xiaomi Mi 9: from SMS to Telegram

Did you buy a Xiaomi Mi 9 or upgrade your firmware and notices suddenly stop making sounds? Or is your smartphone just silent when you send new messages to WhatsApp or Viber? The problem is often not the hardware breakdown, but the settings of Xiaomi’s MIUI, the company’s shell. Even experienced users sometimes miss key points: for example, individual audio settings for each messenger or the conflict of Do Not Disturb and Sound modes.

In this article, we’ll look at all the ways to return sound to notifications on the Mi 9, from the basics in the Sound menu to hidden options for specific applications, and also find out why sometimes a smartphone vibrates but doesn’t make sounds, and how to fix it without resetting.

If you've tried to turn on sound through standard settings, but the result is zero, don't rush to bring your phone to the service. 90% of the time, the problem is solved software. The main thing is to know where to look. For example, in MIUI 12/13/14, the path to the notification settings is different from the older versions, and for some messengers (like Telegram) you need to set up separately in the application itself.

Before you start, check the obvious:

• 🔊 Media volume is not set to a minimum (volume buttons on the sidebar).
• 🔔 Do Not Disturb Mode** not activated (swipe down from the top edge of the screen).
• 📱 The sound profile is not switched to Vibration or No Sound (the speaker icon in the notification panel).

1. Basic setting of notification sound in MIUI

Start by checking the global audio settings. In MIUI, they are divided into several categories: calls, notifications, alarms and system sounds. For the Xiaomi Mi 9, the path to these settings is the same regardless of the firmware version (if you do not take into account minor changes in the interface).

Open Settings → Sound and vibration. Here you are interested in the following items:

• 🎵 Loudness of notifications – move the slider to the right (if it is at zero, the notifications will be silent).
• 🔔 Default notification sound – click to select a tune from standard or downloaded.
• 📳 Vibration at notifications – turn on if you want tactile recoil.

Important: if all the options are included in this menu, but there is no sound, the problem lies either in the settings of a particular application (see next section) or in conflict with the energy saving mode.

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MIUI 14 has introduced Adaptive Sounds, which automatically adjusts the volume of notifications based on ambient noise. If it is enabled, try turning it off in Settings → Sound → Adaptive Sounds – sometimes this helps to return a stable sound.

2. Sound adjustment for individual applications

MIUI allows you to flexibly manage notifications for each instant messenger or game, for example, you can turn off the audio for Facebook, but leave it for WhatsApp.

1. Go to Settings → Applications → Application Management.
2. Select the application you want (such as Telegram or Viber).
3. Put it on the Notifications.
4. Activate the Allow Notifications switch** (if it is turned off).
5. Below, find the item "Sound" and select a melody. In some applications (for example, WhatsApp), the sound is customized inside the messenger itself.

For SMS, the path is different: Settings → Applications → Messages → Notifications → Notification sound. Here you can turn on the vibration and flashing LED (if you have one on your model).

Open the messenger settings (e.g. Telegram)| Go to Notifications and Sounds |Enable Notification Sound |Select a tune (not "No Sound") |Check if notifications are disabled in MIUI-->

3.Do Not Disturb mode problems and sound profiles

One of the most common reasons for the Xiaomi Mi 9’s silence is the activated Do Not Disturb (DND) mode, which can be activated automatically on a schedule, geolocation, or when connected to a specific Wi-Fi network.

1. Swipe down from the top of the screen to open the notification bar.
2. Make sure the badge 🔔 They will not be able to do it (if you are not, then you will be able to do it).
3. For detailed settings, go to Settings → Do not disturb.
4. Check the automatic switching rules (the Schedule tab**).

MIUI also has sound profiles (e.g., Work, Home, Outdoors) that can redefine global settings to reset them:

1. Open Settings → Sound and vibration → Sound profiles.
2. Select an active profile and reset it to factory settings (Reset button** at the bottom of the screen).

4. Conflict with energy saving and battery optimization

MIUI aggressively optimizes the background of applications to save battery life, which means that messengers may not receive notifications on time or receive them without sound, to fix:

1. Open Settings → Battery and Performance → Battery Consumption Management.
2. Select an app (like Viber) that doesn’t have sound for it.
3. Set the "No Limits" mode.
4. Go back and turn on AutoRun for this application (the AutoRun tab in the same menu).

For WhatsApp and Telegram, it is also recommended to:

• 🔄 Deactivate “Optimization” MIUI»** in the application settings (if there is such a point).
• 📌 Secure the application in multitasking (swipe up) → hold the icon → «Secure»).

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If after optimizing the battery notifications come with a delay or without sound, check the background settings for each messenger separately. MIUI by default limits their operation.

5. Resetting the sound settings to factory

If none of these things work, try resetting your audio settings, which won't affect your data (photos, contacts, messages), but will return all audio settings to the post-purchase state.

Instructions:

1. Go to Settings → System and device → Additional → Resetting.
2. Select “Reset the sound settings”** (not to be confused with a full reset!).
3. Confirm the action.

After discharge:

• 🔊 Go to Settings. → Sound and vibration and adjust the volume of notifications again.
• 🔔 Check the sound for each messenger (as described in Section 2).

⚠️ Warning: If the sound never came after the reset, the problem may be the firmware. MIUI Up to the latest version in Settings → The phone. → Updating the system.

Hardware problems: speaker, connector or firmware

If the software methods did not work, the reason may be:

On Xiaomi Mi 9, there is a frequent bug where, after connecting Bluetooth headphones, system sounds (including notifications) continue to play through them, even if the headset is turned off. To fix, go to Settings → Connected Devices → Bluetooth, find your headphones and forget them (forget button).

⚠️ Note: If you recently dropped your phone or wet it, do not try to disassemble yourself - contact the service.

FAQ: Frequent questions about the sound of notifications on Xiaomi Mi 9