I use my SMH-10 with headphones plugged into my phone.
This works great as long is I plug in my headphones AFTER I pair with the sena.
Two things I'd love changed:
-If I pause a song then start it playing again, the audio changes to the sena speakers - I'd love to be able to leave it playing through my iphone's audio out jack
-The jog dial won't control the audio output of the headphone jack on my phone - I'd love for that to change.