Hi, I have a 3.5 to 3.5 jack connected to an iPhone and a Mac. I want to record with my Mac some voice messages and whatsapp audios. I've tried Quicktime, Voice memos and GarageBand, and none of them are recording. In sound settings my input is built in microphone. I also have an iRig that inputs guitar sound to the Mac, but this isn't working either. Any ideas?