[iOS 26] [PushToTalk] Not receiving microphone PCM sample when Transmission Starts from System UI.

Steps To reproduce:

  • Login to application and App has joined the PTC channel.
  • Push the application to background and Lock the device.
  • From the System UI press the talk button which will start transmit.
  • Audio Session has been activated and Audio unit has been initialised properly.
  • On terminator side no media is being played out.

Issue observed consistently on specific models which has configured audio codec with Stereo type.

More details are added : FB20281626

[iOS 26] [PushToTalk] Not receiving microphone PCM sample when Transmission Starts from System UI.
 
 
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