Hey guys I recently got shifted to iphone 7 from 6, well if I see the physical difference I would say its none. Sound quality is improved indeed, camera is now 4k and the major addition thing I would go for is WATERPROOFING, although I have not used it so far, the home buttom has also been changed its is not push button but when you tap on it it just vibrate and gives me great feeling
I would recomend iphone 7 to all provided you are an apple Iphone Fan