When I ring someone I can hear them for I put it on load speaker and they can't hear me out
when I ring someone or one rings me I can bearly hear them so I put it on loud speaker and they can't hear me, when it's on loud speaker people say it sounds like I'm under water ive only had the phone for a month anyone know if it's a hardware problem or software??
iPhone 6s, iOS 9.3.1