I love my B&O headphones, but with an iPhone 7 Plus, I need to use the dongle to be able to listen to music on my phone.
I tend to lose things so I ordered a few more third party ones from eBay for a few bucks. They came in all sorts of colours, so I found ones that were exactly the same colour as my phone.
While I really like the look of them, and they do for the most part work, I discovered that there is the slightest white noises whenever I use them versus using the real dongle. And as a slightly OCD person, it drives me nuts.
Maybe it’s these specific ones, but I think I’m going to stay away from third party ones for now. Think twice before you buy them because they might not work 100%!