---
title: "callObserver(_:callChanged:)"
framework: callkit
role: symbol
role_heading: Instance Method
path: "callkit/cxcallobserverdelegate/callobserver(_:callchanged:)"
---

# callObserver(_:callChanged:)

Called when a call is changed.

## Declaration

```swift
func callObserver(_ callObserver: CXCallObserver, callChanged call: CXCall)
```

## Parameters

- `callObserver`: The call observer for the delegate.
- `call`: The call that has been changed.