Hey guys - some good news. Original order: iPhone 7+ JB 256GB 09/09/16 - Delivered on 03/10/16 iPhone arrived with a ridge cut look around the screen (where the screen separates from the casing) and also arrived with the hissing issue. The hissing was constant but got louder under load. Called Apple who arranged a replacement. Replacement order: 11/10/16 - Delivered on 26/10/16 New iPhone has no ridge cut look and I can't hear the slightest of sounds from the back of the device no matter what I do (gaming etc) - totally silent!