I had an HTC one X and connected to my cardo scala q2 multiset pro and it says connected (no phone). Wifes iphone 4 worked though. We have new phones now, I have razr maxx hd and she has iphone 5. Again, her phone works on both headsets, mine does not. Only thing I have been able to do with my htc one x and my razr maxx hd is listen to my sirius xm app, cant make or answer calls with the headset button or use any voice commands at all. Wondering if any other riders out there have had any issues with bluetooth headsets. I am thinking of buying the sena smh10 but dont wanna waste more money hoping it will work. Has anyone used their phone with any motorcycle bluetooth headsets successfully?