Has anyone had problems with the DTMF on the Moto X? My phone won't work with the front door entry system at my apartment (although I haven't had a problem with other automated systems). I never had any problems with my previous phone and nobody else in my building is having an issue, so it just seems like the system just isn't recognizing the tone from my Moto X when I press 9. In the caller settings menu, I only see the ability to change between 'normal' and 'long' tones. I've tried both, and neither works. Could this be a problem with KitKat rather than the phone? Any other suggestions to get it to work?