When I use my Xiaomi Piston 2's on my LG Optimus L9 (Carbonrom), the middle play/pause button works, but it also treats the volume buttons on the headset as play/pause buttons. It'd be great if there was an option to keep 3-button headset functionality normal. I'd like to be able to control the volume with the volume buttons, and have the middle button as play/pause. Trust me, i'v even tried other app's to try and restore this functionality, including Jay's Headset control. Surprisingly the buttons work perfectly on the Note 3 and Galaxy S5