Microphone Toggle On

Whenever I answer the notification that somebody is at the door the video automatically opens on my phone landscape as if I am holding my screen at a 90 degree angle, even if my phone is upright. From this screen you can access the mute button but not the microphone button. The screen doesn’t easily rotate round and by the time I can get to the microphone button I can either be at the door already or the person has left. It would be more functional if the microphone was accessible to toggle on/off on the full screen camera, which it actually shows you can do that on the advert?!? or if you could have a setting that once the notification is answered and the camera opens the microphone is automatically turned on. Please let me know if there is a way to do this already.