I recently (February 24) stumbled into the above - located with 2 swipes down from the top, and gave it a try. Sooooperb. I was able to record a discussion on the phone.Recently however, after 'playing' with the particular settings: 'Media' and 'Media and Mic', it no longer records phone calls, but it does record the video aspect, which, of course, is pretty limited on a phone call...!!
I tried shouting at the phone, enquiring about its birth, to no avail.
I have completed all the 'One UI' updates, so wondered if this facility has been 'fine-tuned(!), and no longer works as it did back in 12 February 24...??!!??
Appreciate any comments.
Cheers.