Installed the Zumo 665 with NIM. Everything works fine either thru the speakers or my factory head set EXCEPT my iPhone 3gs.

The phone syncs to the zumo and I can make and receive calls but I cannot hear anyone on my end. They can hear me but I cant hear them?

Thoughts

 

Not sure what NIM is...but I'm assuming that's your bluetooth headset. From the sound of it...it may be a compatibility issue since it's clear the phone is synched to the Zumo.

I have a Zumo 665 and an iPhone 3gs and a Scala G4.

Make sure your Zumo setting isn't on "mute"...that happened to me the other day when I wasn't hearing stuff through my headsets but was showing everything to be synced up. Just hitting the volume up on the Zumo doesn't un-mute it.

Sounds like you connected it as recommended...that is sync the phone to the Zumo and then sync the Zumo to your headset.

You might try removing the iPhone from the Zumo and then adding it back. Sometimes when something doesn't work...I re-install everything and it often starts working. Of course, you've probably tried that already.

If you end up starting the syncing process over...you might want to make sure only one bluetooth at a time is turned on since they can interfere with each other. I was told that by someone at Cardo Scala.

Good luck! Hope it's not an incompatibility issue.