Hola everybody! I'm experiencing something REALLY annoying with my iPhones since upgrading to iOS 7 (i'm now on 7.0.4, the problem has been there since 7.0.0 .. When I have a handsfree unit connected through bluetooth, almost every time (but NOT every time) I make a call, I have to change audio output to Bluetooth Headset. What's even stranger is the fact, that is starts on Bluetooth, then changes automatically to iPhone, and I have to manually change it back to Bluetooth. There's no problem when answering a call (using the button on the bluetooth headset). The same thing has happened on three different iPhones now (two iPhone 5 and one iPhone 4s).. If I use it with iOS 6, this doesn't happen... So annoying! Anyone have any tips?