Phone call quality SGA5

A

AC Question

Hi, I have an active 5 and recently have been having an issue with call quality. One specific person i talk to there is greater quality on the phone call, but the other party cannot hear me sometimes. It almost sounds like its on a facetime call on and iphone. But when i speak with other people with iphone, i do not get this effect. Is there some setting i am missing on the phone that causes this? On the phone that this is happening with (the iphone), the wifi calling setting is turned off. Any explanation for this?