I have an iRig Cast mic which plugs into the headset/mic jack on top of our phone: IK Multimedia | iRig MIC Cast - Ultra compact voice recording microphone for iPhone, iPad, iPod touch and Android devices I bought it for the capability to capture a high quality audio recording using the mic... ...But it occurs me I might use it for a different purpose: I was hoping that I might be able to use it when interacting by voice with my phone in my car (since the normal built-in mic is on the bottom of the phone, tough to talk into while in portrait orientation on my windshield mount and doesn't pick up much of what I say). When I use the external mic plugged into the mic/headphone jack, the phone hears what I'm saying all right, but I can't hear what it says back to me because it assumes (of course) that what was plugged in to the mic/headphone jack on top of the phone was a mic/headphone. So the phone audio output is not routed to the speaker but instead to the jack where it is connected to my mic which of course does nothing with it. I'm hoping there might be a way to change this behavior so I can use my mic to talk to my phone and have my phone still talk back to me over the speakers. Anyone know how?