---
title: isMicrophoneInjectionAvailable
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avaudiosession/ismicrophoneinjectionavailable
---

# isMicrophoneInjectionAvailable

A Boolean value that indicates whether microphone injection is available.

## Declaration

```swift
var isMicrophoneInjectionAvailable: Bool { get }
```

## Discussion

Discussion Observe changes to the value of this property by registering for notifications of type microphoneInjectionCapabilitiesChangeNotification.

## See Also

### Enabling adding audio to calls

- [preferredMicrophoneInjectionMode](avfaudio/avaudiosession/preferredmicrophoneinjectionmode.md)
- [setPreferredMicrophoneInjectionMode(_:)](avfaudio/avaudiosession/setpreferredmicrophoneinjectionmode(_:).md)
- [AVAudioSession.MicrophoneInjectionMode](avfaudio/avaudiosession/microphoneinjectionmode.md)
- [microphoneInjectionCapabilitiesChangeNotification](avfaudio/avaudiosession/microphoneinjectioncapabilitieschangenotification.md)