Who is recording my calls ,

No-one is recording your calls. The orange dot is an indicator that the microphone is in use, as it would be if you're on a phone call. All that has changed is that you now get this indicator to tell you.

Your image shows you are mistreating your battery life.

Never runs under 20% battery if you don't have to.

If you do it too often, your iPhone battery life will be shorten, be warned.