Hi, So I've just got the iPhone 7 Plus and I've ran into some problems. Should I return it? Problem 1: hissing, the phone hisses when you put it right on your ear and you can hear a buzzing sound like bz bz and cracking noises coming out of the back of the phone. It is only noticeable when you hold it against your ear, but it's also slightly noticeable if you put the front of the phone against your ear. Problem 2: the top speaker hisses (more than the bottom one) when you play audio on a high volume Problem 3: the high pitched noise (problem 1) is being picked up in videos in quite rooms, it is not noticeable in videos which are taken is noisier rooms.