Your headset may be creaking when you move your head due to loose or worn-out parts, such as the headband or ear cushions. This can cause friction and movement between the components, resulting in the creaking sound.
Don't think so. But you can get a bluetooth wireless headset to
make calls to your friends but the person you are trying to call
via a bluetooth headset must have a headset too. If only 1 of you
have a head-set you can only hear the person opposite with the
headset and you can only hear them.