Video audio only playing through the earpiece on iOS once audio is recorded and played

🐛 Bug Report

Summary of Issue

On iOS, once audio is recorded and played back, the video no longer plays through the bottom speaker, only through the ear piece.

Environment - output of expo diagnostics & the platform(s) you’re targeting

iOS 13.6.1 iPhone SE (2020)

Expo diagnostics:

  Expo CLI 3.24.2 environment info:
    System:
      OS: macOS 10.15.4
      Shell: 5.7.1 - /bin/zsh
    Binaries:
      Node: 14.8.0 - ~/.nvm/versions/node/v14.8.0/bin/node
      Yarn: 1.22.4 - /usr/local/bin/yarn
      npm: 6.14.8 - ~/.nvm/versions/node/v14.8.0/bin/npm
      Watchman: 4.9.0 - /usr/local/bin/watchman
    IDEs:
      Android Studio: 4.0 AI-193.6911.18.40.6514223
      Xcode: 11.6/11E708 - /usr/bin/xcodebuild
    npmPackages:
      expo: ^38.0.9 => 38.0.9 
      react: 16.11.0 => 16.11.0 
      react-native: https://github.com/expo/react-native/archive/sdk-38.0.0.tar.gz => 0.62.2 
      react-navigation: ^3.13.0 => 3.13.0 
    npmGlobalPackages:
      expo-cli: 3.24.2

Reproducible Demo

Offending example:

https://snack.expo.io/OZJ!b7qQe Note that if I delete the recorder component after using it, the issue persists.

Working example (missing the recording, but can help you hear what the video should sound like)

https://snack.expo.io/zkM2VySDl

Steps to Reproduce

Basically if you record audio and play it back in an iOS app. Then play a video.

Expected Behavior vs Actual Behavior

I expect to have audio play through both the bottom speaker and the earpiece. It is only in the ear piece.

[IjzerenHein]

I think @MrXyfir has a very good point. This might just be related to the Audio-mode that is set when calling Audio.setAudioModeAsync({ allowsRecordingIOS: false }). This sets the audio up for both recording and audio playback at the same time (AVSession -> AVAudioSessionCategoryPlayAndRecord). Details here: https://developer.apple.com/documentation/avfaudio/avaudiosessioncategoryplayandrecord?language=objc

In this mode audio is played at a lower volume and might be routed to the headphones.

Try setting allowsRecordingIOS to true before recording, and to false after recording has completed.

[MrXyfir]

Still an issue.