I have had my D3 for many years and have had it hooked up to numerous phones without problems, until now. It worked fine for both calls and audio for my iPhone 3g and my wife's 4, but now that I have the 4s it will only work for audio? It connects without problems, I can use the controls to control both Pandora and my music on the phone via bluetooth, but not in or out audio when making calls. It shows up as connected, will switch from whatever mode it is in to phone mode if either an inbound call is coming or I initiate a call on my phone, but then I have to switch my phone to speakerphone to actually have the call. It worked for a few calls when I initially set it up, but has since stopped. I have un-paired it and re-paired it a couple of times, but that hasn't helped at all. Any help would be appreciated. Thanks - Erik