<!--
{
  "availability" : [
    "iOS: -",
    "iPadOS: -",
    "macCatalyst: -",
    "macOS: -",
    "visionOS: -"
  ],
  "documentType" : "symbol",
  "framework" : "AudioToolbox",
  "identifier" : "/documentation/AudioToolbox/kAudioSessionMode_Default",
  "metadataVersion" : "0.1.0",
  "role" : "Global Variable",
  "symbol" : {
    "kind" : "Global Variable",
    "modules" : [
      "Audio Toolbox"
    ],
    "preciseIdentifier" : "c:@Ea@kAudioSessionMode_Default@kAudioSessionMode_Default"
  },
  "title" : "kAudioSessionMode_Default"
}
-->

# kAudioSessionMode_Default

The default mode; used unless you set a mode with the [`AudioSessionSetProperty(_:_:_:)`](/documentation/AudioToolbox/AudioSessionSetProperty(_:_:_:)) function.

```
var kAudioSessionMode_Default: Int { get }
```

## Discussion

When this mode is in use, audio session behavior matches that of iOS versions prior to iOS 5.0. You can use this mode with every audio session category. On devices with more than one built-in microphone, the primary microphone is used.

This mode is equivalent to the <doc://com.apple.documentation/documentation/AVFAudio/AVAudioSession/Mode-swift.struct/default> mode provided in the AVFoundation framework.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)