I have yet to see anyone anywhere mention this, but I have been unable to use headphones with an inline mic successfully with the included adapter on an iPhone 7. Listening to audio works fine, and you can, in fact, hear the person on the other end of the line through the headphones, however they will NOT be able to hear you. In fact, none of the button controls function at all for phone calls. You can increase the volume, decrease the volume, and even invoke siri by pressing and holding the center button on the mic. However, you cannot answer a call by simply pressing the center button, and the person on the other end of the phone will not be able to hear you. This makes me pretty upset, considering how often I use my earbuds. Frankly I'd return this thing and get my 6S back if the Apple Upgrade program worked that way. Has anyone had success in using standard headphones with an in-line mic for phone calls through the lightning/headphone adapter? I feel completely misled by Apple on this one.