---
title: AVCaptureDevice.PrimaryConstituentDeviceSwitchingBehavior.unsupported
framework: avfoundation
role: symbol
role_heading: Case
path: avfoundation/avcapturedevice/primaryconstituentdeviceswitchingbehavior-swift.enum/unsupported
---

# AVCaptureDevice.PrimaryConstituentDeviceSwitchingBehavior.unsupported

The device doesn’t support constituent device switching.

## Declaration

```swift
case unsupported
```

## Discussion

Discussion Switching cameras isn’t supported on devices that don’t have more than one constituent device.

## See Also

### Switching behaviors

- [AVCaptureDevice.PrimaryConstituentDeviceSwitchingBehavior.auto](avfoundation/avcapturedevice/primaryconstituentdeviceswitchingbehavior-swift.enum/auto.md)
- [AVCaptureDevice.PrimaryConstituentDeviceSwitchingBehavior.restricted](avfoundation/avcapturedevice/primaryconstituentdeviceswitchingbehavior-swift.enum/restricted.md)
- [AVCaptureDevice.PrimaryConstituentDeviceSwitchingBehavior.locked](avfoundation/avcapturedevice/primaryconstituentdeviceswitchingbehavior-swift.enum/locked.md)