---
title: CBPeripheralManagerState.unknown
framework: corebluetooth
role: symbol
role_heading: Case
path: corebluetooth/cbperipheralmanagerstate/unknown
---

# CBPeripheralManagerState.unknown

A manager state that indicates the current state of the peripheral manager is unknown.

## Declaration

```swift
case unknown
```

## Discussion

Discussion When the manager is in this state, an update is imminent.

## See Also

### Constants

- [CBPeripheralManagerState.resetting](corebluetooth/cbperipheralmanagerstate/resetting.md)
- [CBPeripheralManagerState.unsupported](corebluetooth/cbperipheralmanagerstate/unsupported.md)
- [CBPeripheralManagerState.unauthorized](corebluetooth/cbperipheralmanagerstate/unauthorized.md)
- [CBPeripheralManagerState.poweredOff](corebluetooth/cbperipheralmanagerstate/poweredoff.md)
- [CBPeripheralManagerState.poweredOn](corebluetooth/cbperipheralmanagerstate/poweredon.md)