@Mike Linksvayer I should've said headset. They are the standard plugs with four conductors. The wiring on Android is specified here. Most phones these days seem to have agreed on that wiring. My phone does not. I just need to swap ground with one of the other (I forget which), and I should be able to use Android headseats. Now if I can just remember how to use a soldering iron... One end gets hot, right?