i have purchased Mi2 headset and Xiaomi mi-2 phone on the same day from different sellers. My phone order was canceled but headset was delivered now I have Nexus 4 phone and Xiaomi Mi-2 headset. The problem is that only 1 of 3 buttons work on nexus. How do make all 3 buttons work? I've tried installing "headset controllers" but none of them recognize these 2 side buttons! Should I install MIUI ROM - will it work then? Additionally when I click on play/pause button i receive: "headset controller conflict detected" message but the command goes through (play/pause working OK)..