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# handsFree(_:isServiceAvailable:)

Tells the delegate the service level indicator of the connected Bluetooth hands-free phone or headset has changed.

```
optional func handsFree(_ device: IOBluetoothHandsFreeDevice!, isServiceAvailable: NSNumber!)
```

## Parameters

`device`

The connected Bluetooth hands-free phone or headset.

`isServiceAvailable`

The new service level. For possible values, see [`IOBluetoothHandsFreeIndicatorService`](/documentation/IOBluetooth/IOBluetoothHandsFreeIndicatorService).

## Discussion

---

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