Hi, Xiaomi Mi2S over here. I recently found the settings option to calibrate the buttons on your headset, happy I grapped my Denon AHC-560R earphones to try it out. Unfortunately when asked to press the top button and doing so, nothing happens. This might be more of a unsupported hardware problem but I'm not sure.. When I press the middle button it does seem to recognise it and it will say I'm pressing the wrong button! Is anybody else experiencing similar problems with their headsets?