Comment by milesvp

Oh, and you missed an important one for me, which is that many phones will only use half duplex for the codec (possibly made worse by noise cancelling that will cut the speaker when the mic is active). This is annoying because I used to be able to talk to people on land lines, interrupt them, and then wait for them to finish talking so I can have a turn. Now, as soon as I talk, their audio cuts out, and now I can't tell if they've actually paused to let me talk. I find it very maddening, and difficult to hold a conversation.

Luckily, at least on my phone, when I attach a bluetooth headset, I can still get full duplex audio through the headset