yes...I know what you are talking about...I did what you suggested and the icon is still there...and yes it looks like the one for extra volume or something when you put the phone on speakers but still no change.
So I went to an Orange Shop and they have no idea what that icon is and what it does or how to turn it off...they told me it must be something from the new update but they have no clue what it is yet...
Hello.Thank you.Actually the wifi calling is off...I already looked there and the button is off...I turned it on then off again and still no change. I'm from Romania and I use Orange.