---
title: CBCentralManagerState.unknown
framework: corebluetooth
role: symbol
role_heading: Case
path: corebluetooth/cbcentralmanagerstate/unknown
---

# CBCentralManagerState.unknown

The manager’s state is unknown.

## Declaration

```swift
case unknown
```

## Discussion

Discussion This is a temporary state. Once Core Bluetooth initializes or resets, it updates the state value.

## See Also

### Constants

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