Here is the situation. I call a guy, he is indoors, call quality is fine. Then he steps outdoors on a windy day and when he speaks I hear the wind in addition to his voice, call is still fine. But then when I speak he can't hear me because my voice is breaking up. So then I yell at him "put your phone on mute!!", at which time he mutes his own microphone, and at that point he can hear me just fine again. So for some reason the presence of background wind noise on his microphone is preventing my voice from getting cleanly to his speaker. I am hoping someone can tell me how to fix this, or even what is this problem called. He has an iphone 6 and mine is a 7. Thanks.