answer:The whole left brain right brain isn’t really completely true. Usually all sides of our brain are working somewhat. For me, my hearing is worse on my left, so when I listen to the phone on my left I think even if I am not totally aware of it, I am not hearing things easily and so it takes more concentration for me. I also think we get accustomed to certain positions and when they are altered we feel a little uncomfortable or discombobulated. Switching the phone, sitting in a different seat in a classroom, and so on.