Screen Recording won't record audio in audio/video calls
I can't get Screen Recording to record audio on WhatsApp audio or video calls or any other audio/video calls on my iPhone (8 Plus, iOS 13.4.1). As soon as the calls starts it cuts off recording of audio, or if I'm already on the call and I start Screen Recording there is no audio recorded. I've tried turning the microphone on and off, restarting my phone, making sure software updated, returning my iPhone settings to original settings, using headphones, but no luck. I also tried a third-party app, TechSmith Capture, but had the same problem -- as soon as the call starts, whether audio or video, no audio is recorded on either end. I'm in Peru, not sure if that might be a factor.
iPhone 8 Plus, iOS 13