I have an iphone 5s. I often plug the cable in to listen to music because Bluetooth does not work for anything but voice (at least on the S). However, by accident I discovered BT is capable of being an output device...
The iphone has a very annoying feature of auto-playing something from your library as soon as the cable is plugged in. I see no way to stop this. So when you are on the phone and plug in the cable, the call and the music are happening simultaneously. I discovered that if you start a podcast or some music with the cable plugged in (which requires the cable), then make a phone call (which uses BT), and then remove the cable, both continue to work over BT.
It's not useful because the call has to be going to keep the music playing. But the capability seems to be there somehow.
The iphone has a very annoying feature of auto-playing something from your library as soon as the cable is plugged in. I see no way to stop this. So when you are on the phone and plug in the cable, the call and the music are happening simultaneously. I discovered that if you start a podcast or some music with the cable plugged in (which requires the cable), then make a phone call (which uses BT), and then remove the cable, both continue to work over BT.
It's not useful because the call has to be going to keep the music playing. But the capability seems to be there somehow.