When notification sounds stop working on your Xiaomi 15 Ultra, it is easy to miss important alerts, messages, and reminders. The phone may still vibrate or show notifications on screen, but without sound, it feels unreliable. In most cases, this issue is caused by sound settings, modes, or app-specific controls, and you can fix it by checking a few key areas.
Why Notification Sound Is Not Working on Your Xiaomi 15 Ultra
- Notification volume is set too low or muted.
- Do Not Disturb mode is turned on.
- App notification sounds are disabled individually.
- Silent or vibration-only sound profile is active.
- Temporary system glitches affecting audio output.
Restart the Phone
Restarting clears temporary audio glitches and reloads all system sound services. This is often enough to restore notification sounds if they stopped working suddenly.
Swipe down from the top of the screen to open Quick Settings.
Tap the Power icon, and then tap Restart.
Wait for the phone to turn back on, then test a notification sound.
Check Notification Volume
Notification sounds use a separate volume level from media and calls. If this volume is muted, you will not hear alerts even though everything else works.
Open Settings, and then tap Sound and vibration.
Tap Volume, and then raise the Notification volume slider.
Make sure it is not set to mute or vibration only.
Turn Off Do Not Disturb
Do Not Disturb silences notification sounds by design. If it is enabled, your phone may still receive notifications but without audio alerts.
Open Settings, and then tap Sound and vibration.
Tap Do Not Disturb, and then turn it off.
Check if notification sounds start playing again.
Check App Notification Sound Settings
Some apps allow you to mute sounds independently from system settings. If this is disabled, only that app will stay silent.
Open Settings, and then tap Notifications.
Tap App notifications, and then select the affected app.
Make sure notification sound is enabled and not set to silent.
Disable Silent or Vibration Mode
Silent or vibration-only modes override notification sounds. This often happens if the sound profile was changed accidentally.
Open Settings, and then tap Sound and vibration.
Check the sound profile, and switch from Silent or Vibrate to Ring.
Send yourself a test notification to confirm.
Reset App Preferences
If notification sounds fail across multiple apps, resetting app preferences can restore default behavior without deleting data.
Open Settings, and then tap Apps.
Tap Manage apps, and then reset app preferences.
Restart the phone and test notification sounds again.
Notification sound issues on the Xiaomi 15 Ultra are usually tied to simple settings rather than hardware problems. Once volumes, modes, and app permissions are corrected, alerts should work normally again and keep you from missing important notifications.
FAQs
Why do I hear notification sounds sometimes but not always?
This usually happens when Do Not Disturb schedules are active or when specific apps are allowed to bypass sound restrictions while others are muted.
Can Bluetooth devices affect notification sounds?
Yes. If your phone is connected to Bluetooth earbuds or a speaker, notification sounds may play through that device instead of the phone speaker.
Does system update affect notification sounds?
After updates, sound and notification settings may reset or change. Rechecking volume, Do Not Disturb, and app notification settings often fixes the problem.
