Cant

Cant Why can't the callee whom I am on call with hear the sound coming from my phone's speaker but I can while my phone is on loud speaker?
Why can't the callee whom I am on call with hear the sound coming from my phone's speaker but I can while my phone is on loud speaker?
Why can't I hear my phone unless it's on speaker?Why can't I hear the person I'm calling on my phone?Why can't I hear the other person on the phone i...