If you are planning an interview, we recommend using a single microphone to capture your conversation. If you wish to use two separate microphones, you can use a “lapel microphone”. Each connected to the other’s mobile devices. The audio can be stitched together later while editing.
If you have to interview someone who is in a different location, you can use Skype or Zencastr as a tool to record your conversations. These tools are easy to use and can capture good audio quality. To know more about how to record podcast interviews remotely, check out this blog.
You can also check out this video: