---
title: QualityOfService.default
framework: foundation
role: symbol
role_heading: Case
path: foundation/qualityofservice/default
---

# QualityOfService.default

## Declaration

```swift
case `default`
```

## Discussion

Discussion Indicates no explicit quality of service information. Whenever possible, an appropriate quality of service is determined from available sources. Otherwise, some quality of service level between NSQualityOfServiceUserInteractive and NSQualityOfServiceUtility is used.

## See Also

### Constants

- [QualityOfService.userInteractive](foundation/qualityofservice/userinteractive.md)
- [QualityOfService.userInitiated](foundation/qualityofservice/userinitiated.md)
- [QualityOfService.utility](foundation/qualityofservice/utility.md)
- [QualityOfService.background](foundation/qualityofservice/background.md)