# OnMuteStateChanged

> A delegate called whenever the device mute state is changed.

## Definition

* **Type:** Event
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.AudioModule

```csharp
public static event Action<bool> OnMuteStateChanged
```

### Remarks

**Note**: When this delegate is called [AudioSettings.Mobile.muteState](/engine/6000.0/script-reference/unityengine/audiosettings/mobile/mutestate.md) property is also updated.