---
title: defaultCritical
framework: usernotifications
role: symbol
role_heading: Type Property
path: usernotifications/unnotificationsound/defaultcritical
---

# defaultCritical

The default sound used for critical alerts.

## Declaration

```swift
@NSCopying class var defaultCritical: UNNotificationSound { get }
```

## Discussion

Discussion Critical alerts ingore the mute switch and Do Not Disturb. They require a special entitlement issued by Apple.

## See Also

### Getting Critical Sounds

- [defaultCriticalSound(withAudioVolume:)](usernotifications/unnotificationsound/defaultcriticalsound(withaudiovolume:).md)
- [criticalSoundNamed(_:)](usernotifications/unnotificationsound/criticalsoundnamed(_:).md)
- [criticalSoundNamed(_:withAudioVolume:)](usernotifications/unnotificationsound/criticalsoundnamed(_:withaudiovolume:).md)