Tried to read though tons of post about the new iphone and Pioneer ND-BT1. I had an old iphone 2g wich worked perfect upgraded to the new iphone now my phone does not want to pair. Phone and reciever both find each other just wont pair with one another. When I hit pair with it just snycs then stops. I tried deleting everything out of phone as far as all bluetooth devices. I also reset password on stereo and changed the name to sync to just to try a few steps. I also restored factory settings as well as restarted both Iphone and Stereo multiple times. Truck was parked for 10 months but, before it was parked everything worked fine. Only new phone is what I have.

Probably not compatible. that is five plus year old technology with the Z3.

Umm.... well, I'm not sure. I have a Z1->Z3 and use the ND-BT1 with an iP4 and have had no problems. Try setting the pairing to start from the phone, not the device.