Your RealMe 16 suddenly switches from sound to silent or vibrate without warning. Notifications get muted, calls are missed, and it feels like the phone has a mind of its own. This issue is usually caused by system features, automation settings, or third party apps that control sound behavior, and most of the fixes are straightforward once you know where to look.
Why Your RealMe 16 Sound Mode Keeps Changing
- Do Not Disturb is scheduled or enabled automatically.
- System automation features are controlling sound profiles.
- Third party apps have permission to change sound settings.
- Battery optimization is restricting background audio behavior.
- Software bugs after a recent system update.
Check Do Not Disturb Settings
Do Not Disturb is the most common reason sound mode changes on its own. When it is scheduled, the phone automatically switches sound modes based on time or activity.
Open Settings, and then tap Sound and vibration.
Tap Do Not Disturb, and check if it is turned on or scheduled.
Disable schedules and automation if they are enabled.
Review Automation and Smart Features
Some RealMe devices include automation features that change sound modes based on location, time, or usage. These can silently override your manual sound settings.
Open Settings, and then tap Convenience tools.
Tap Smart services or Automation, and review active rules.
Disable any rule related to sound, silent mode, or vibration.
Check App Permissions
Certain apps like task managers, fitness apps, or focus tools can change sound modes. If an app has permission to control system settings, it may switch modes in the background.
Open Settings, and then tap Privacy.
Tap Permission manager, and review apps with system control access.
Remove permission from apps that do not need sound control.
Turn Off Battery Optimization for System Audio
Aggressive battery saving can interrupt audio services and cause sound profiles to reset. Allowing system audio services to run normally helps keep sound mode stable.
Open Settings, and then tap Battery.
Tap App battery management, and locate system audio or phone services.
Set them to allow background activity.
Restart the Phone
A restart clears temporary system glitches that may affect sound behavior. It also reloads audio services and resets active background rules.
Open Settings, and then tap Additional settings.
Tap Restart, and wait for the phone to boot fully.
Test the sound mode again after rebooting.
Update the Software
Sound mode bugs are often fixed in system updates. Running outdated software increases the chance of automation and audio issues.
Open Settings, and then tap Software update.
Check for updates, and install the latest version if available.
Restart the phone after the update finishes.
Once these settings are corrected, your RealMe 16 should stop changing sound modes on its own. After disabling automation and app control, the phone will respect your chosen sound profile again.
FAQs
Why does my RealMe 16 switch to silent mode at night?
This usually happens because Do Not Disturb has a schedule enabled. Turning off the schedule prevents automatic sound changes.
Can third party apps really change sound mode?
Yes. Apps with system control permission can change volume, silent mode, or vibration settings without notifying you.
Will resetting the phone fix this issue permanently?
In most cases, no reset is needed. Adjusting Do Not Disturb, automation, and app permissions resolves the problem without data loss.
